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Finding the Fourth Proportional to 318,656.90, 439,752.15 and 173,466.88

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Solution

The fourth proportional to 318,656.90, 439,752.15 and 173,466.88 is: 239,387.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,656.90 : 439,752.15 = 173,466.88 : x
  2. Step 2: Convert to fraction form
    318,656.90/439,752.15 = 173,466.88/x
  3. Step 3: Cross multiply
    318,656.90x = 439,752.15 × 173,466.88
  4. Step 4: Simplify right side
    318,656.90x = 76,282,433,433.79
  5. Step 5: Solve for x
    x = 76,282,433,433.79/318,656.90
  6. Step 6: Final answer
    x = 239,387.36

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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.