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Finding the Fourth Proportional to 145,287.36, 217,930.71 and 38,671.34

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Solution

The fourth proportional to 145,287.36, 217,930.71 and 38,671.34 is: 58,006.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,287.36 : 217,930.71 = 38,671.34 : x
  2. Step 2: Convert to fraction form
    145,287.36/217,930.71 = 38,671.34/x
  3. Step 3: Cross multiply
    145,287.36x = 217,930.71 × 38,671.34
  4. Step 4: Simplify right side
    145,287.36x = 8,427,671,638.22
  5. Step 5: Solve for x
    x = 8,427,671,638.22/145,287.36
  6. Step 6: Final answer
    x = 58,006.92

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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.