Home / 287,467,242.80-431,200,864.20-80,205,252.80

Finding the Fourth Proportional to 287,467,242.80, 431,200,864.20 and 80,205,252.80

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Solution

The fourth proportional to 287,467,242.80, 431,200,864.20 and 80,205,252.80 is: 120,307,879.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,467,242.80 : 431,200,864.20 = 80,205,252.80 : x
  2. Step 2: Convert to fraction form
    287,467,242.80/431,200,864.20 = 80,205,252.80/x
  3. Step 3: Cross multiply
    287,467,242.80x = 431,200,864.20 × 80,205,252.80
  4. Step 4: Simplify right side
    287,467,242.80x = 34,584,574,320,739,468
  5. Step 5: Solve for x
    x = 34,584,574,320,739,468/287,467,242.80
  6. Step 6: Final answer
    x = 120,307,879.20

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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.