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Finding the Fourth Proportional to 369,665.76, 510,139.12 and 199,899.84

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Solution

The fourth proportional to 369,665.76, 510,139.12 and 199,899.84 is: 275,861.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,665.76 : 510,139.12 = 199,899.84 : x
  2. Step 2: Convert to fraction form
    369,665.76/510,139.12 = 199,899.84/x
  3. Step 3: Cross multiply
    369,665.76x = 510,139.12 × 199,899.84
  4. Step 4: Simplify right side
    369,665.76x = 101,976,728,465.74
  5. Step 5: Solve for x
    x = 101,976,728,465.74/369,665.76
  6. Step 6: Final answer
    x = 275,861.98

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.