Home / 260,330.06-390,345.65-102,472.40

Finding the Fourth Proportional to 260,330.06, 390,345.65 and 102,472.40

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Solution

The fourth proportional to 260,330.06, 390,345.65 and 102,472.40 is: 153,649.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,330.06 : 390,345.65 = 102,472.40 : x
  2. Step 2: Convert to fraction form
    260,330.06/390,345.65 = 102,472.40/x
  3. Step 3: Cross multiply
    260,330.06x = 390,345.65 × 102,472.40
  4. Step 4: Simplify right side
    260,330.06x = 39,999,656,432.83
  5. Step 5: Solve for x
    x = 39,999,656,432.83/260,330.06
  6. Step 6: Final answer
    x = 153,649.78

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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.