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Finding the Fourth Proportional to 432,859.40, 649,289.10 and 243,902.60

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Solution

The fourth proportional to 432,859.40, 649,289.10 and 243,902.60 is: 365,853.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,859.40 : 649,289.10 = 243,902.60 : x
  2. Step 2: Convert to fraction form
    432,859.40/649,289.10 = 243,902.60/x
  3. Step 3: Cross multiply
    432,859.40x = 649,289.10 × 243,902.60
  4. Step 4: Simplify right side
    432,859.40x = 158,363,299,641.66
  5. Step 5: Solve for x
    x = 158,363,299,641.66/432,859.40
  6. Step 6: Final answer
    x = 365,853.90

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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.