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Finding the Fourth Proportional to 387,483.69, 581,224.69 and 107,000.13

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Solution

The fourth proportional to 387,483.69, 581,224.69 and 107,000.13 is: 160,499.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,483.69 : 581,224.69 = 107,000.13 : x
  2. Step 2: Convert to fraction form
    387,483.69/581,224.69 = 107,000.13/x
  3. Step 3: Cross multiply
    387,483.69x = 581,224.69 × 107,000.13
  4. Step 4: Simplify right side
    387,483.69x = 62,191,117,389.21
  5. Step 5: Solve for x
    x = 62,191,117,389.21/387,483.69
  6. Step 6: Final answer
    x = 160,499.96

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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.