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Finding the Fourth Proportional to 262,020.70, 392,123.85 and 156,915.10

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Solution

The fourth proportional to 262,020.70, 392,123.85 and 156,915.10 is: 234,829.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,020.70 : 392,123.85 = 156,915.10 : x
  2. Step 2: Convert to fraction form
    262,020.70/392,123.85 = 156,915.10/x
  3. Step 3: Cross multiply
    262,020.70x = 392,123.85 × 156,915.10
  4. Step 4: Simplify right side
    262,020.70x = 61,530,153,135.14
  5. Step 5: Solve for x
    x = 61,530,153,135.14/262,020.70
  6. Step 6: Final answer
    x = 234,829.36

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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.