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Finding the Fourth Proportional to 198,312.88, 297,598.92 and 79,962.16

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Solution

The fourth proportional to 198,312.88, 297,598.92 and 79,962.16 is: 119,995.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,312.88 : 297,598.92 = 79,962.16 : x
  2. Step 2: Convert to fraction form
    198,312.88/297,598.92 = 79,962.16/x
  3. Step 3: Cross multiply
    198,312.88x = 297,598.92 × 79,962.16
  4. Step 4: Simplify right side
    198,312.88x = 23,796,652,456.87
  5. Step 5: Solve for x
    x = 23,796,652,456.87/198,312.88
  6. Step 6: Final answer
    x = 119,995.50

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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.