Home / 387,400.71-534,585.28-242,271.70

Finding the Fourth Proportional to 387,400.71, 534,585.28 and 242,271.70

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Solution

The fourth proportional to 387,400.71, 534,585.28 and 242,271.70 is: 334,317.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,400.71 : 534,585.28 = 242,271.70 : x
  2. Step 2: Convert to fraction form
    387,400.71/534,585.28 = 242,271.70/x
  3. Step 3: Cross multiply
    387,400.71x = 534,585.28 × 242,271.70
  4. Step 4: Simplify right side
    387,400.71x = 129,514,884,580.58
  5. Step 5: Solve for x
    x = 129,514,884,580.58/387,400.71
  6. Step 6: Final answer
    x = 334,317.62

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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.