Home / 438,334.20-657,501.30-172,103.40

Finding the Fourth Proportional to 438,334.20, 657,501.30 and 172,103.40

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Solution

The fourth proportional to 438,334.20, 657,501.30 and 172,103.40 is: 258,155.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,334.20 : 657,501.30 = 172,103.40 : x
  2. Step 2: Convert to fraction form
    438,334.20/657,501.30 = 172,103.40/x
  3. Step 3: Cross multiply
    438,334.20x = 657,501.30 × 172,103.40
  4. Step 4: Simplify right side
    438,334.20x = 113,158,209,234.42
  5. Step 5: Solve for x
    x = 113,158,209,234.42/438,334.20
  6. Step 6: Final answer
    x = 258,155.10

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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.