Home / 260,109,320.88-390,165,285.15-66,020,793.96

Finding the Fourth Proportional to 260,109,320.88, 390,165,285.15 and 66,020,793.96

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Solution

The fourth proportional to 260,109,320.88, 390,165,285.15 and 66,020,793.96 is: 99,031,521.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,109,320.88 : 390,165,285.15 = 66,020,793.96 : x
  2. Step 2: Convert to fraction form
    260,109,320.88/390,165,285.15 = 66,020,793.96/x
  3. Step 3: Cross multiply
    260,109,320.88x = 390,165,285.15 × 66,020,793.96
  4. Step 4: Simplify right side
    260,109,320.88x = 25,759,021,901,232,796
  5. Step 5: Solve for x
    x = 25,759,021,901,232,796/260,109,320.88
  6. Step 6: Final answer
    x = 99,031,521.88

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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.