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Finding the Fourth Proportional to 207,228.80, 310,689.60 and 88,803.20

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Solution

The fourth proportional to 207,228.80, 310,689.60 and 88,803.20 is: 133,138.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,228.80 : 310,689.60 = 88,803.20 : x
  2. Step 2: Convert to fraction form
    207,228.80/310,689.60 = 88,803.20/x
  3. Step 3: Cross multiply
    207,228.80x = 310,689.60 × 88,803.20
  4. Step 4: Simplify right side
    207,228.80x = 27,590,230,686.72
  5. Step 5: Solve for x
    x = 27,590,230,686.72/207,228.80
  6. Step 6: Final answer
    x = 133,138.98

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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.