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Finding the Fourth Proportional to 432,872.40, 649,308.60 and 243,915.60

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Solution

The fourth proportional to 432,872.40, 649,308.60 and 243,915.60 is: 365,873.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,872.40 : 649,308.60 = 243,915.60 : x
  2. Step 2: Convert to fraction form
    432,872.40/649,308.60 = 243,915.60/x
  3. Step 3: Cross multiply
    432,872.40x = 649,308.60 × 243,915.60
  4. Step 4: Simplify right side
    432,872.40x = 158,376,496,754.16
  5. Step 5: Solve for x
    x = 158,376,496,754.16/432,872.40
  6. Step 6: Final answer
    x = 365,873.40

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Similar ratio
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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.