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Finding the Fourth Proportional to 611,292.32, 916,895.10 and 162,003.20

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Solution

The fourth proportional to 611,292.32, 916,895.10 and 162,003.20 is: 242,993.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,292.32 : 916,895.10 = 162,003.20 : x
  2. Step 2: Convert to fraction form
    611,292.32/916,895.10 = 162,003.20/x
  3. Step 3: Cross multiply
    611,292.32x = 916,895.10 × 162,003.20
  4. Step 4: Simplify right side
    611,292.32x = 148,539,940,264.32
  5. Step 5: Solve for x
    x = 148,539,940,264.32/611,292.32
  6. Step 6: Final answer
    x = 242,993.30

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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.