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Finding the Fourth Proportional to 242,512.72, 363,446.70 and 128,637.07

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Solution

The fourth proportional to 242,512.72, 363,446.70 and 128,637.07 is: 192,784.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,512.72 : 363,446.70 = 128,637.07 : x
  2. Step 2: Convert to fraction form
    242,512.72/363,446.70 = 128,637.07/x
  3. Step 3: Cross multiply
    242,512.72x = 363,446.70 × 128,637.07
  4. Step 4: Simplify right side
    242,512.72x = 46,752,718,589.17
  5. Step 5: Solve for x
    x = 46,752,718,589.17/242,512.72
  6. Step 6: Final answer
    x = 192,784.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.