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Finding the Fourth Proportional to 432,087.20, 648,325.20 and 151,805.60

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Solution

The fourth proportional to 432,087.20, 648,325.20 and 151,805.60 is: 227,776.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,087.20 : 648,325.20 = 151,805.60 : x
  2. Step 2: Convert to fraction form
    432,087.20/648,325.20 = 151,805.60/x
  3. Step 3: Cross multiply
    432,087.20x = 648,325.20 × 151,805.60
  4. Step 4: Simplify right side
    432,087.20x = 98,419,395,981.12
  5. Step 5: Solve for x
    x = 98,419,395,981.12/432,087.20
  6. Step 6: Final answer
    x = 227,776.70

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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.