Home / 387,408.22-581,987.13-229,740.10

Finding the Fourth Proportional to 387,408.22, 581,987.13 and 229,740.10

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Solution

The fourth proportional to 387,408.22, 581,987.13 and 229,740.10 is: 345,128.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,408.22 : 581,987.13 = 229,740.10 : x
  2. Step 2: Convert to fraction form
    387,408.22/581,987.13 = 229,740.10/x
  3. Step 3: Cross multiply
    387,408.22x = 581,987.13 × 229,740.10
  4. Step 4: Simplify right side
    387,408.22x = 133,705,779,128.42
  5. Step 5: Solve for x
    x = 133,705,779,128.42/387,408.22
  6. Step 6: Final answer
    x = 345,128.92

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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.