Home / 343,972.40-515,785.80-156,772.40

Finding the Fourth Proportional to 343,972.40, 515,785.80 and 156,772.40

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Solution

The fourth proportional to 343,972.40, 515,785.80 and 156,772.40 is: 235,079.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,972.40 : 515,785.80 = 156,772.40 : x
  2. Step 2: Convert to fraction form
    343,972.40/515,785.80 = 156,772.40/x
  3. Step 3: Cross multiply
    343,972.40x = 515,785.80 × 156,772.40
  4. Step 4: Simplify right side
    343,972.40x = 80,860,977,751.92
  5. Step 5: Solve for x
    x = 80,860,977,751.92/343,972.40
  6. Step 6: Final answer
    x = 235,079.84

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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.