Home / 354,921.60-532,489.12-212,923.20

Finding the Fourth Proportional to 354,921.60, 532,489.12 and 212,923.20

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Solution

The fourth proportional to 354,921.60, 532,489.12 and 212,923.20 is: 319,448.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,921.60 : 532,489.12 = 212,923.20 : x
  2. Step 2: Convert to fraction form
    354,921.60/532,489.12 = 212,923.20/x
  3. Step 3: Cross multiply
    354,921.60x = 532,489.12 × 212,923.20
  4. Step 4: Simplify right side
    354,921.60x = 113,379,287,395.58
  5. Step 5: Solve for x
    x = 113,379,287,395.58/354,921.60
  6. Step 6: Final answer
    x = 319,448.82

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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.