Home / 280,569.37-386,685.14-212,423.11

Finding the Fourth Proportional to 280,569.37, 386,685.14 and 212,423.11

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Solution

The fourth proportional to 280,569.37, 386,685.14 and 212,423.11 is: 292,764.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,569.37 : 386,685.14 = 212,423.11 : x
  2. Step 2: Convert to fraction form
    280,569.37/386,685.14 = 212,423.11/x
  3. Step 3: Cross multiply
    280,569.37x = 386,685.14 × 212,423.11
  4. Step 4: Simplify right side
    280,569.37x = 82,140,859,195.64
  5. Step 5: Solve for x
    x = 82,140,859,195.64/280,569.37
  6. Step 6: Final answer
    x = 292,764.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.