Home / 260,016,015.40-390,081,759.90-87,487,959.40

Finding the Fourth Proportional to 260,016,015.40, 390,081,759.90 and 87,487,959.40

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Solution

The fourth proportional to 260,016,015.40, 390,081,759.90 and 87,487,959.40 is: 131,251,365.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,016,015.40 : 390,081,759.90 = 87,487,959.40 : x
  2. Step 2: Convert to fraction form
    260,016,015.40/390,081,759.90 = 87,487,959.40/x
  3. Step 3: Cross multiply
    260,016,015.40x = 390,081,759.90 × 87,487,959.40
  4. Step 4: Simplify right side
    260,016,015.40x = 34,127,457,172,811,748
  5. Step 5: Solve for x
    x = 34,127,457,172,811,748/260,016,015.40
  6. Step 6: Final answer
    x = 131,251,365.88

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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.