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Finding the Fourth Proportional to 370,669.30, 555,793.31 and 145,908

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Solution

The fourth proportional to 370,669.30, 555,793.31 and 145,908 is: 218,779.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,669.30 : 555,793.31 = 145,908 : x
  2. Step 2: Convert to fraction form
    370,669.30/555,793.31 = 145,908/x
  3. Step 3: Cross multiply
    370,669.30x = 555,793.31 × 145,908
  4. Step 4: Simplify right side
    370,669.30x = 81,094,690,640.25
  5. Step 5: Solve for x
    x = 81,094,690,640.25/370,669.30
  6. Step 6: Final answer
    x = 218,779.09

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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.