Home / 220,117.34-330,307.18-79,886.90

Finding the Fourth Proportional to 220,117.34, 330,307.18 and 79,886.90

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Solution

The fourth proportional to 220,117.34, 330,307.18 and 79,886.90 is: 119,877.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,117.34 : 330,307.18 = 79,886.90 : x
  2. Step 2: Convert to fraction form
    220,117.34/330,307.18 = 79,886.90/x
  3. Step 3: Cross multiply
    220,117.34x = 330,307.18 × 79,886.90
  4. Step 4: Simplify right side
    220,117.34x = 26,387,216,657.94
  5. Step 5: Solve for x
    x = 26,387,216,657.94/220,117.34
  6. Step 6: Final answer
    x = 119,877.96

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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.