Home / 260,016,016.40-390,081,761.40-87,487,960.40

Finding the Fourth Proportional to 260,016,016.40, 390,081,761.40 and 87,487,960.40

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Solution

The fourth proportional to 260,016,016.40, 390,081,761.40 and 87,487,960.40 is: 131,251,367.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,016,016.40 : 390,081,761.40 = 87,487,960.40 : x
  2. Step 2: Convert to fraction form
    260,016,016.40/390,081,761.40 = 87,487,960.40/x
  3. Step 3: Cross multiply
    260,016,016.40x = 390,081,761.40 × 87,487,960.40
  4. Step 4: Simplify right side
    260,016,016.40x = 34,127,457,694,125,448
  5. Step 5: Solve for x
    x = 34,127,457,694,125,448/260,016,016.40
  6. Step 6: Final answer
    x = 131,251,367.38

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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.