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Finding the Fourth Proportional to 424,690.78, 586,055.92 and 243,276.60

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Solution

The fourth proportional to 424,690.78, 586,055.92 and 243,276.60 is: 335,711.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,690.78 : 586,055.92 = 243,276.60 : x
  2. Step 2: Convert to fraction form
    424,690.78/586,055.92 = 243,276.60/x
  3. Step 3: Cross multiply
    424,690.78x = 586,055.92 × 243,276.60
  4. Step 4: Simplify right side
    424,690.78x = 142,573,691,627.47
  5. Step 5: Solve for x
    x = 142,573,691,627.47/424,690.78
  6. Step 6: Final answer
    x = 335,711.77

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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.