Home / 287,417,884.12-431,120,601.28-80,150,764.36

Finding the Fourth Proportional to 287,417,884.12, 431,120,601.28 and 80,150,764.36

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Solution

The fourth proportional to 287,417,884.12, 431,120,601.28 and 80,150,764.36 is: 120,224,410.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,417,884.12 : 431,120,601.28 = 80,150,764.36 : x
  2. Step 2: Convert to fraction form
    287,417,884.12/431,120,601.28 = 80,150,764.36/x
  3. Step 3: Cross multiply
    287,417,884.12x = 431,120,601.28 × 80,150,764.36
  4. Step 4: Simplify right side
    287,417,884.12x = 34,554,645,723,934,792
  5. Step 5: Solve for x
    x = 34,554,645,723,934,792/287,417,884.12
  6. Step 6: Final answer
    x = 120,224,410.63

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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.