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Finding the Fourth Proportional to 645,155.70, 967,503.15 and 224,445.30

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Solution

The fourth proportional to 645,155.70, 967,503.15 and 224,445.30 is: 336,587.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,155.70 : 967,503.15 = 224,445.30 : x
  2. Step 2: Convert to fraction form
    645,155.70/967,503.15 = 224,445.30/x
  3. Step 3: Cross multiply
    645,155.70x = 967,503.15 × 224,445.30
  4. Step 4: Simplify right side
    645,155.70x = 217,151,534,752.70
  5. Step 5: Solve for x
    x = 217,151,534,752.70/645,155.70
  6. Step 6: Final answer
    x = 336,587.80

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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.