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Finding the Fourth Proportional to 660,064.16, 990,087.60 and 161,432.48

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Solution

The fourth proportional to 660,064.16, 990,087.60 and 161,432.48 is: 242,146.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,064.16 : 990,087.60 = 161,432.48 : x
  2. Step 2: Convert to fraction form
    660,064.16/990,087.60 = 161,432.48/x
  3. Step 3: Cross multiply
    660,064.16x = 990,087.60 × 161,432.48
  4. Step 4: Simplify right side
    660,064.16x = 159,832,296,685.25
  5. Step 5: Solve for x
    x = 159,832,296,685.25/660,064.16
  6. Step 6: Final answer
    x = 242,146.61

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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.