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Finding the Fourth Proportional to 279,664.42, 385,934.92 and 152,340

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Solution

The fourth proportional to 279,664.42, 385,934.92 and 152,340 is: 210,228.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,664.42 : 385,934.92 = 152,340 : x
  2. Step 2: Convert to fraction form
    279,664.42/385,934.92 = 152,340/x
  3. Step 3: Cross multiply
    279,664.42x = 385,934.92 × 152,340
  4. Step 4: Simplify right side
    279,664.42x = 58,793,325,712.80
  5. Step 5: Solve for x
    x = 58,793,325,712.80/279,664.42
  6. Step 6: Final answer
    x = 210,228.12

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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.