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Finding the Fourth Proportional to 486,670, 730,005 and 154,246

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Solution

The fourth proportional to 486,670, 730,005 and 154,246 is: 231,369

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,670 : 730,005 = 154,246 : x
  2. Step 2: Convert to fraction form
    486,670/730,005 = 154,246/x
  3. Step 3: Cross multiply
    486,670x = 730,005 × 154,246
  4. Step 4: Simplify right side
    486,670x = 112,600,351,230
  5. Step 5: Solve for x
    x = 112,600,351,230/486,670
  6. Step 6: Final answer
    x = 231,369

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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.