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Finding the Fourth Proportional to 427,740.60, 641,610.90 and 295,030.20

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Solution

The fourth proportional to 427,740.60, 641,610.90 and 295,030.20 is: 442,545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,740.60 : 641,610.90 = 295,030.20 : x
  2. Step 2: Convert to fraction form
    427,740.60/641,610.90 = 295,030.20/x
  3. Step 3: Cross multiply
    427,740.60x = 641,610.90 × 295,030.20
  4. Step 4: Simplify right side
    427,740.60x = 189,294,592,149.18
  5. Step 5: Solve for x
    x = 189,294,592,149.18/427,740.60
  6. Step 6: Final answer
    x = 442,545.30

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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.