Home / 321,831.10-482,833.05-287,011.90

Finding the Fourth Proportional to 321,831.10, 482,833.05 and 287,011.90

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Solution

The fourth proportional to 321,831.10, 482,833.05 and 287,011.90 is: 430,594.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,831.10 : 482,833.05 = 287,011.90 : x
  2. Step 2: Convert to fraction form
    321,831.10/482,833.05 = 287,011.90/x
  3. Step 3: Cross multiply
    321,831.10x = 482,833.05 × 287,011.90
  4. Step 4: Simplify right side
    321,831.10x = 138,578,831,063.30
  5. Step 5: Solve for x
    x = 138,578,831,063.30/321,831.10
  6. Step 6: Final answer
    x = 430,594.90

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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.