Home / 278,545,132.80-417,817,699.20-240,281,380.80

Finding the Fourth Proportional to 278,545,132.80, 417,817,699.20 and 240,281,380.80

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Solution

The fourth proportional to 278,545,132.80, 417,817,699.20 and 240,281,380.80 is: 360,422,071.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,545,132.80 : 417,817,699.20 = 240,281,380.80 : x
  2. Step 2: Convert to fraction form
    278,545,132.80/417,817,699.20 = 240,281,380.80/x
  3. Step 3: Cross multiply
    278,545,132.80x = 417,817,699.20 × 240,281,380.80
  4. Step 4: Simplify right side
    278,545,132.80x = 100,393,813,686,455,056
  5. Step 5: Solve for x
    x = 100,393,813,686,455,056/278,545,132.80
  6. Step 6: Final answer
    x = 360,422,071.20

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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.