Home / 278,617,691.40-417,926,537.10-74,166,433.80

Finding the Fourth Proportional to 278,617,691.40, 417,926,537.10 and 74,166,433.80

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Solution

The fourth proportional to 278,617,691.40, 417,926,537.10 and 74,166,433.80 is: 111,249,650.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,617,691.40 : 417,926,537.10 = 74,166,433.80 : x
  2. Step 2: Convert to fraction form
    278,617,691.40/417,926,537.10 = 74,166,433.80/x
  3. Step 3: Cross multiply
    278,617,691.40x = 417,926,537.10 × 74,166,433.80
  4. Step 4: Simplify right side
    278,617,691.40x = 30,996,120,847,090,396
  5. Step 5: Solve for x
    x = 30,996,120,847,090,396/278,617,691.40
  6. Step 6: Final answer
    x = 111,249,650.70

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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.