Home / 279,308.25-385,442.15-151,981.65

Finding the Fourth Proportional to 279,308.25, 385,442.15 and 151,981.65

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Solution

The fourth proportional to 279,308.25, 385,442.15 and 151,981.65 is: 209,732.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,308.25 : 385,442.15 = 151,981.65 : x
  2. Step 2: Convert to fraction form
    279,308.25/385,442.15 = 151,981.65/x
  3. Step 3: Cross multiply
    279,308.25x = 385,442.15 × 151,981.65
  4. Step 4: Simplify right side
    279,308.25x = 58,580,133,176.64
  5. Step 5: Solve for x
    x = 58,580,133,176.64/279,308.25
  6. Step 6: Final answer
    x = 209,732.91

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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.