Home / 438,330.15-657,331.20-153,910.80

Finding the Fourth Proportional to 438,330.15, 657,331.20 and 153,910.80

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Solution

The fourth proportional to 438,330.15, 657,331.20 and 153,910.80 is: 230,808.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,330.15 : 657,331.20 = 153,910.80 : x
  2. Step 2: Convert to fraction form
    438,330.15/657,331.20 = 153,910.80/x
  3. Step 3: Cross multiply
    438,330.15x = 657,331.20 × 153,910.80
  4. Step 4: Simplify right side
    438,330.15x = 101,170,370,856.96
  5. Step 5: Solve for x
    x = 101,170,370,856.96/438,330.15
  6. Step 6: Final answer
    x = 230,808.61

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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.