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Finding the Fourth Proportional to 285,412.01, 393,836.78 and 158,055.71

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Solution

The fourth proportional to 285,412.01, 393,836.78 and 158,055.71 is: 218,099.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,412.01 : 393,836.78 = 158,055.71 : x
  2. Step 2: Convert to fraction form
    285,412.01/393,836.78 = 158,055.71/x
  3. Step 3: Cross multiply
    285,412.01x = 393,836.78 × 158,055.71
  4. Step 4: Simplify right side
    285,412.01x = 62,248,150,312.97
  5. Step 5: Solve for x
    x = 62,248,150,312.97/285,412.01
  6. Step 6: Final answer
    x = 218,099.27

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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.