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Finding the Fourth Proportional to 387,422.73, 534,901.59 and 242,448.93

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Solution

The fourth proportional to 387,422.73, 534,901.59 and 242,448.93 is: 334,741.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,422.73 : 534,901.59 = 242,448.93 : x
  2. Step 2: Convert to fraction form
    387,422.73/534,901.59 = 242,448.93/x
  3. Step 3: Cross multiply
    387,422.73x = 534,901.59 × 242,448.93
  4. Step 4: Simplify right side
    387,422.73x = 129,686,318,150.80
  5. Step 5: Solve for x
    x = 129,686,318,150.80/387,422.73
  6. Step 6: Final answer
    x = 334,741.12

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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.