Home / 260,387,598.60-390,309,757.38-87,805,071.72

Finding the Fourth Proportional to 260,387,598.60, 390,309,757.38 and 87,805,071.72

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Solution

The fourth proportional to 260,387,598.60, 390,309,757.38 and 87,805,071.72 is: 131,616,007.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,387,598.60 : 390,309,757.38 = 87,805,071.72 : x
  2. Step 2: Convert to fraction form
    260,387,598.60/390,309,757.38 = 87,805,071.72/x
  3. Step 3: Cross multiply
    260,387,598.60x = 390,309,757.38 × 87,805,071.72
  4. Step 4: Simplify right side
    260,387,598.60x = 34,271,176,239,766,700
  5. Step 5: Solve for x
    x = 34,271,176,239,766,700/260,387,598.60
  6. Step 6: Final answer
    x = 131,616,007.92

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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.