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Finding the Fourth Proportional to 356,518.90, 534,773.18 and 86,649.04

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Solution

The fourth proportional to 356,518.90, 534,773.18 and 86,649.04 is: 129,972.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,518.90 : 534,773.18 = 86,649.04 : x
  2. Step 2: Convert to fraction form
    356,518.90/534,773.18 = 86,649.04/x
  3. Step 3: Cross multiply
    356,518.90x = 534,773.18 × 86,649.04
  4. Step 4: Simplify right side
    356,518.90x = 46,337,582,664.75
  5. Step 5: Solve for x
    x = 46,337,582,664.75/356,518.90
  6. Step 6: Final answer
    x = 129,972.30

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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.