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Finding the Fourth Proportional to 371,637.20, 512,859.24 and 201,871.16

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Solution

The fourth proportional to 371,637.20, 512,859.24 and 201,871.16 is: 278,582.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,637.20 : 512,859.24 = 201,871.16 : x
  2. Step 2: Convert to fraction form
    371,637.20/512,859.24 = 201,871.16/x
  3. Step 3: Cross multiply
    371,637.20x = 512,859.24 × 201,871.16
  4. Step 4: Simplify right side
    371,637.20x = 103,531,489,695.52
  5. Step 5: Solve for x
    x = 103,531,489,695.52/371,637.20
  6. Step 6: Final answer
    x = 278,582.15

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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.