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Finding the Fourth Proportional to 611,310.10, 917,005.65 and 162,024.70

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Solution

The fourth proportional to 611,310.10, 917,005.65 and 162,024.70 is: 243,047.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,310.10 : 917,005.65 = 162,024.70 : x
  2. Step 2: Convert to fraction form
    611,310.10/917,005.65 = 162,024.70/x
  3. Step 3: Cross multiply
    611,310.10x = 917,005.65 × 162,024.70
  4. Step 4: Simplify right side
    611,310.10x = 148,577,565,339.56
  5. Step 5: Solve for x
    x = 148,577,565,339.56/611,310.10
  6. Step 6: Final answer
    x = 243,047.78

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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.