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Finding the Fourth Proportional to 308,001.40, 425,043.68 and 172,041.07

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Solution

The fourth proportional to 308,001.40, 425,043.68 and 172,041.07 is: 237,417.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,001.40 : 425,043.68 = 172,041.07 : x
  2. Step 2: Convert to fraction form
    308,001.40/425,043.68 = 172,041.07/x
  3. Step 3: Cross multiply
    308,001.40x = 425,043.68 × 172,041.07
  4. Step 4: Simplify right side
    308,001.40x = 73,124,969,503.94
  5. Step 5: Solve for x
    x = 73,124,969,503.94/308,001.40
  6. Step 6: Final answer
    x = 237,417.65

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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.