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Finding the Fourth Proportional to 318,417.80, 439,479.38 and 182,543.00

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Solution

The fourth proportional to 318,417.80, 439,479.38 and 182,543.00 is: 251,945.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,417.80 : 439,479.38 = 182,543.00 : x
  2. Step 2: Convert to fraction form
    318,417.80/439,479.38 = 182,543.00/x
  3. Step 3: Cross multiply
    318,417.80x = 439,479.38 × 182,543.00
  4. Step 4: Simplify right side
    318,417.80x = 80,223,882,722.30
  5. Step 5: Solve for x
    x = 80,223,882,722.30/318,417.80
  6. Step 6: Final answer
    x = 251,945.35

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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.