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Finding the Fourth Proportional to 219,397.40, 329,060.90 and 79,083.80

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Solution

The fourth proportional to 219,397.40, 329,060.90 and 79,083.80 is: 118,613.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,397.40 : 329,060.90 = 79,083.80 : x
  2. Step 2: Convert to fraction form
    219,397.40/329,060.90 = 79,083.80/x
  3. Step 3: Cross multiply
    219,397.40x = 329,060.90 × 79,083.80
  4. Step 4: Simplify right side
    219,397.40x = 26,023,386,403.42
  5. Step 5: Solve for x
    x = 26,023,386,403.42/219,397.40
  6. Step 6: Final answer
    x = 118,613.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.