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Finding the Fourth Proportional to 359,257.20, 538,885.80 and 122,521.20

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Solution

The fourth proportional to 359,257.20, 538,885.80 and 122,521.20 is: 183,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,257.20 : 538,885.80 = 122,521.20 : x
  2. Step 2: Convert to fraction form
    359,257.20/538,885.80 = 122,521.20/x
  3. Step 3: Cross multiply
    359,257.20x = 538,885.80 × 122,521.20
  4. Step 4: Simplify right side
    359,257.20x = 66,024,934,878.96
  5. Step 5: Solve for x
    x = 66,024,934,878.96/359,257.20
  6. Step 6: Final answer
    x = 183,781.80

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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.