Home / 212,475.86-318,710.91-72,332.18

Finding the Fourth Proportional to 212,475.86, 318,710.91 and 72,332.18

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Solution

The fourth proportional to 212,475.86, 318,710.91 and 72,332.18 is: 108,497.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,475.86 : 318,710.91 = 72,332.18 : x
  2. Step 2: Convert to fraction form
    212,475.86/318,710.91 = 72,332.18/x
  3. Step 3: Cross multiply
    212,475.86x = 318,710.91 × 72,332.18
  4. Step 4: Simplify right side
    212,475.86x = 23,053,054,910.08
  5. Step 5: Solve for x
    x = 23,053,054,910.08/212,475.86
  6. Step 6: Final answer
    x = 108,497.29

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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.