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Finding the Fourth Proportional to 422,702.52, 634,136.66 and 156,465.28

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Solution

The fourth proportional to 422,702.52, 634,136.66 and 156,465.28 is: 234,728.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,702.52 : 634,136.66 = 156,465.28 : x
  2. Step 2: Convert to fraction form
    422,702.52/634,136.66 = 156,465.28/x
  3. Step 3: Cross multiply
    422,702.52x = 634,136.66 × 156,465.28
  4. Step 4: Simplify right side
    422,702.52x = 99,220,370,065.16
  5. Step 5: Solve for x
    x = 99,220,370,065.16/422,702.52
  6. Step 6: Final answer
    x = 234,728.60

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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.