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Finding the Fourth Proportional to 317,434.53, 438,065.01 and 174,207.90

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Solution

The fourth proportional to 317,434.53, 438,065.01 and 174,207.90 is: 240,409.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,434.53 : 438,065.01 = 174,207.90 : x
  2. Step 2: Convert to fraction form
    317,434.53/438,065.01 = 174,207.90/x
  3. Step 3: Cross multiply
    317,434.53x = 438,065.01 × 174,207.90
  4. Step 4: Simplify right side
    317,434.53x = 76,314,385,455.58
  5. Step 5: Solve for x
    x = 76,314,385,455.58/317,434.53
  6. Step 6: Final answer
    x = 240,409.84

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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.