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Finding the Fourth Proportional to 317,656.96, 438,367.24 and 172,462.91

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Solution

The fourth proportional to 317,656.96, 438,367.24 and 172,462.91 is: 237,999.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,656.96 : 438,367.24 = 172,462.91 : x
  2. Step 2: Convert to fraction form
    317,656.96/438,367.24 = 172,462.91/x
  3. Step 3: Cross multiply
    317,656.96x = 438,367.24 × 172,462.91
  4. Step 4: Simplify right side
    317,656.96x = 75,602,087,882.81
  5. Step 5: Solve for x
    x = 75,602,087,882.81/317,656.96
  6. Step 6: Final answer
    x = 237,999.16

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1.5x scale

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.