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Finding the Fourth Proportional to 317,388.52, 438,003.80 and 174,148.44

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Solution

The fourth proportional to 317,388.52, 438,003.80 and 174,148.44 is: 240,329.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,388.52 : 438,003.80 = 174,148.44 : x
  2. Step 2: Convert to fraction form
    317,388.52/438,003.80 = 174,148.44/x
  3. Step 3: Cross multiply
    317,388.52x = 438,003.80 × 174,148.44
  4. Step 4: Simplify right side
    317,388.52x = 76,277,678,484.07
  5. Step 5: Solve for x
    x = 76,277,678,484.07/317,388.52
  6. Step 6: Final answer
    x = 240,329.04

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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.