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Finding the Fourth Proportional to 359,136.99, 538,702.25 and 137,520.99

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Solution

The fourth proportional to 359,136.99, 538,702.25 and 137,520.99 is: 206,280.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,136.99 : 538,702.25 = 137,520.99 : x
  2. Step 2: Convert to fraction form
    359,136.99/538,702.25 = 137,520.99/x
  3. Step 3: Cross multiply
    359,136.99x = 538,702.25 × 137,520.99
  4. Step 4: Simplify right side
    359,136.99x = 74,082,866,047.62
  5. Step 5: Solve for x
    x = 74,082,866,047.62/359,136.99
  6. Step 6: Final answer
    x = 206,280.24

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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.