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Finding the Fourth Proportional to 345,881.33, 477,134.71 and 281,422.65

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Solution

The fourth proportional to 345,881.33, 477,134.71 and 281,422.65 is: 388,215.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,881.33 : 477,134.71 = 281,422.65 : x
  2. Step 2: Convert to fraction form
    345,881.33/477,134.71 = 281,422.65/x
  3. Step 3: Cross multiply
    345,881.33x = 477,134.71 × 281,422.65
  4. Step 4: Simplify right side
    345,881.33x = 134,276,513,791.63
  5. Step 5: Solve for x
    x = 134,276,513,791.63/345,881.33
  6. Step 6: Final answer
    x = 388,215.56

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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.