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Finding the Fourth Proportional to 356,519.90, 534,774.68 and 86,650.04

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Solution

The fourth proportional to 356,519.90, 534,774.68 and 86,650.04 is: 129,973.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,519.90 : 534,774.68 = 86,650.04 : x
  2. Step 2: Convert to fraction form
    356,519.90/534,774.68 = 86,650.04/x
  3. Step 3: Cross multiply
    356,519.90x = 534,774.68 × 86,650.04
  4. Step 4: Simplify right side
    356,519.90x = 46,338,247,412.99
  5. Step 5: Solve for x
    x = 46,338,247,412.99/356,519.90
  6. Step 6: Final answer
    x = 129,973.80

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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.