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Finding the Fourth Proportional to 317,479.88, 438,108.18 and 174,240.20

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Solution

The fourth proportional to 317,479.88, 438,108.18 and 174,240.20 is: 240,443.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,479.88 : 438,108.18 = 174,240.20 : x
  2. Step 2: Convert to fraction form
    317,479.88/438,108.18 = 174,240.20/x
  3. Step 3: Cross multiply
    317,479.88x = 438,108.18 × 174,240.20
  4. Step 4: Simplify right side
    317,479.88x = 76,336,056,904.84
  5. Step 5: Solve for x
    x = 76,336,056,904.84/317,479.88
  6. Step 6: Final answer
    x = 240,443.76

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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.