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Finding the Fourth Proportional to 308,666.88, 425,962.22 and 172,700.82

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Solution

The fourth proportional to 308,666.88, 425,962.22 and 172,700.82 is: 238,328.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,666.88 : 425,962.22 = 172,700.82 : x
  2. Step 2: Convert to fraction form
    308,666.88/425,962.22 = 172,700.82/x
  3. Step 3: Cross multiply
    308,666.88x = 425,962.22 × 172,700.82
  4. Step 4: Simplify right side
    308,666.88x = 73,564,023,819.52
  5. Step 5: Solve for x
    x = 73,564,023,819.52/308,666.88
  6. Step 6: Final answer
    x = 238,328.21

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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.