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Finding the Fourth Proportional to 220,681.50, 304,545.33 and 120,079.50

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Solution

The fourth proportional to 220,681.50, 304,545.33 and 120,079.50 is: 165,712.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,681.50 : 304,545.33 = 120,079.50 : x
  2. Step 2: Convert to fraction form
    220,681.50/304,545.33 = 120,079.50/x
  3. Step 3: Cross multiply
    220,681.50x = 304,545.33 × 120,079.50
  4. Step 4: Simplify right side
    220,681.50x = 36,569,650,953.74
  5. Step 5: Solve for x
    x = 36,569,650,953.74/220,681.50
  6. Step 6: Final answer
    x = 165,712.35

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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.