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Finding the Fourth Proportional to 577,139.10, 865,708.65 and 262,211.10

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Solution

The fourth proportional to 577,139.10, 865,708.65 and 262,211.10 is: 393,316.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,139.10 : 865,708.65 = 262,211.10 : x
  2. Step 2: Convert to fraction form
    577,139.10/865,708.65 = 262,211.10/x
  3. Step 3: Cross multiply
    577,139.10x = 865,708.65 × 262,211.10
  4. Step 4: Simplify right side
    577,139.10x = 226,998,417,396.02
  5. Step 5: Solve for x
    x = 226,998,417,396.02/577,139.10
  6. Step 6: Final answer
    x = 393,316.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.