Home / 280,861,875.60-421,292,813.40-172,022,758.80

Finding the Fourth Proportional to 280,861,875.60, 421,292,813.40 and 172,022,758.80

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Solution

The fourth proportional to 280,861,875.60, 421,292,813.40 and 172,022,758.80 is: 258,034,138.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,861,875.60 : 421,292,813.40 = 172,022,758.80 : x
  2. Step 2: Convert to fraction form
    280,861,875.60/421,292,813.40 = 172,022,758.80/x
  3. Step 3: Cross multiply
    280,861,875.60x = 421,292,813.40 × 172,022,758.80
  4. Step 4: Simplify right side
    280,861,875.60x = 72,471,952,023,681,616
  5. Step 5: Solve for x
    x = 72,471,952,023,681,616/280,861,875.60
  6. Step 6: Final answer
    x = 258,034,138.20

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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.