Home / 289,656,811.60-434,485,217.40-257,912,069.20

Finding the Fourth Proportional to 289,656,811.60, 434,485,217.40 and 257,912,069.20

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Solution

The fourth proportional to 289,656,811.60, 434,485,217.40 and 257,912,069.20 is: 386,868,103.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,656,811.60 : 434,485,217.40 = 257,912,069.20 : x
  2. Step 2: Convert to fraction form
    289,656,811.60/434,485,217.40 = 257,912,069.20/x
  3. Step 3: Cross multiply
    289,656,811.60x = 434,485,217.40 × 257,912,069.20
  4. Step 4: Simplify right side
    289,656,811.60x = 112,058,981,456,445,840
  5. Step 5: Solve for x
    x = 112,058,981,456,445,840/289,656,811.60
  6. Step 6: Final answer
    x = 386,868,103.80

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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.