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Finding the Fourth Proportional to 317,657.58, 438,368.11 and 172,463.52

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Solution

The fourth proportional to 317,657.58, 438,368.11 and 172,463.52 is: 238,000.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,657.58 : 438,368.11 = 172,463.52 : x
  2. Step 2: Convert to fraction form
    317,657.58/438,368.11 = 172,463.52/x
  3. Step 3: Cross multiply
    317,657.58x = 438,368.11 × 172,463.52
  4. Step 4: Simplify right side
    317,657.58x = 75,602,507,306.35
  5. Step 5: Solve for x
    x = 75,602,507,306.35/317,657.58
  6. Step 6: Final answer
    x = 238,000.01

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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.