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Finding the Fourth Proportional to 261,580.32, 360,992.70 and 154,154.88

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Solution

The fourth proportional to 261,580.32, 360,992.70 and 154,154.88 is: 212,740.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,580.32 : 360,992.70 = 154,154.88 : x
  2. Step 2: Convert to fraction form
    261,580.32/360,992.70 = 154,154.88/x
  3. Step 3: Cross multiply
    261,580.32x = 360,992.70 × 154,154.88
  4. Step 4: Simplify right side
    261,580.32x = 55,648,786,349.38
  5. Step 5: Solve for x
    x = 55,648,786,349.38/261,580.32
  6. Step 6: Final answer
    x = 212,740.72

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1.5x scale

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.