Home / 259,987,663.71-390,025,339.38-87,423,456.60

Finding the Fourth Proportional to 259,987,663.71, 390,025,339.38 and 87,423,456.60

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Solution

The fourth proportional to 259,987,663.71, 390,025,339.38 and 87,423,456.60 is: 131,149,927.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,987,663.71 : 390,025,339.38 = 87,423,456.60 : x
  2. Step 2: Convert to fraction form
    259,987,663.71/390,025,339.38 = 87,423,456.60/x
  3. Step 3: Cross multiply
    259,987,663.71x = 390,025,339.38 × 87,423,456.60
  4. Step 4: Simplify right side
    259,987,663.71x = 34,097,363,330,187,700
  5. Step 5: Solve for x
    x = 34,097,363,330,187,700/259,987,663.71
  6. Step 6: Final answer
    x = 131,149,927.82

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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.