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Finding the Fourth Proportional to 387,387.33, 534,657.96 and 322,754.07

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Solution

The fourth proportional to 387,387.33, 534,657.96 and 322,754.07 is: 445,453.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,387.33 : 534,657.96 = 322,754.07 : x
  2. Step 2: Convert to fraction form
    387,387.33/534,657.96 = 322,754.07/x
  3. Step 3: Cross multiply
    387,387.33x = 534,657.96 × 322,754.07
  4. Step 4: Simplify right side
    387,387.33x = 172,563,029,974.61
  5. Step 5: Solve for x
    x = 172,563,029,974.61/387,387.33
  6. Step 6: Final answer
    x = 445,453.47

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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.