Home / 258,279.04-387,389.40-89,770.96

Finding the Fourth Proportional to 258,279.04, 387,389.40 and 89,770.96

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Solution

The fourth proportional to 258,279.04, 387,389.40 and 89,770.96 is: 134,646.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,279.04 : 387,389.40 = 89,770.96 : x
  2. Step 2: Convert to fraction form
    258,279.04/387,389.40 = 89,770.96/x
  3. Step 3: Cross multiply
    258,279.04x = 387,389.40 × 89,770.96
  4. Step 4: Simplify right side
    258,279.04x = 34,776,318,331.82
  5. Step 5: Solve for x
    x = 34,776,318,331.82/258,279.04
  6. Step 6: Final answer
    x = 134,646.30

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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.