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Finding the Fourth Proportional to 224,386.18, 310,962.94 and 220,128.20

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Solution

The fourth proportional to 224,386.18, 310,962.94 and 220,128.20 is: 305,062.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,386.18 : 310,962.94 = 220,128.20 : x
  2. Step 2: Convert to fraction form
    224,386.18/310,962.94 = 220,128.20/x
  3. Step 3: Cross multiply
    224,386.18x = 310,962.94 × 220,128.20
  4. Step 4: Simplify right side
    224,386.18x = 68,451,711,309.88
  5. Step 5: Solve for x
    x = 68,451,711,309.88/224,386.18
  6. Step 6: Final answer
    x = 305,062.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.