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Finding the Fourth Proportional to 317,803.96, 438,577.10 and 172,615.11

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Solution

The fourth proportional to 317,803.96, 438,577.10 and 172,615.11 is: 238,213.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,803.96 : 438,577.10 = 172,615.11 : x
  2. Step 2: Convert to fraction form
    317,803.96/438,577.10 = 172,615.11/x
  3. Step 3: Cross multiply
    317,803.96x = 438,577.10 × 172,615.11
  4. Step 4: Simplify right side
    317,803.96x = 75,705,034,359.98
  5. Step 5: Solve for x
    x = 75,705,034,359.98/317,803.96
  6. Step 6: Final answer
    x = 238,213.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.