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Finding the Fourth Proportional to 317,901.66, 438,697.24 and 172,703.69

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Solution

The fourth proportional to 317,901.66, 438,697.24 and 172,703.69 is: 238,327.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,901.66 : 438,697.24 = 172,703.69 : x
  2. Step 2: Convert to fraction form
    317,901.66/438,697.24 = 172,703.69/x
  3. Step 3: Cross multiply
    317,901.66x = 438,697.24 × 172,703.69
  4. Step 4: Simplify right side
    317,901.66x = 75,764,634,114.09
  5. Step 5: Solve for x
    x = 75,764,634,114.09/317,901.66
  6. Step 6: Final answer
    x = 238,327.27

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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.