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Finding the Fourth Proportional to 371,918, 513,244.92 and 202,153.04

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Solution

The fourth proportional to 371,918, 513,244.92 and 202,153.04 is: 278,970.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,918 : 513,244.92 = 202,153.04 : x
  2. Step 2: Convert to fraction form
    371,918/513,244.92 = 202,153.04/x
  3. Step 3: Cross multiply
    371,918x = 513,244.92 × 202,153.04
  4. Step 4: Simplify right side
    371,918x = 103,754,020,842.56
  5. Step 5: Solve for x
    x = 103,754,020,842.56/371,918
  6. Step 6: Final answer
    x = 278,970.15

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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.