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Finding the Fourth Proportional to 261,908.01, 392,871.74 and 84,417.57

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Solution

The fourth proportional to 261,908.01, 392,871.74 and 84,417.57 is: 126,629.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,908.01 : 392,871.74 = 84,417.57 : x
  2. Step 2: Convert to fraction form
    261,908.01/392,871.74 = 84,417.57/x
  3. Step 3: Cross multiply
    261,908.01x = 392,871.74 × 84,417.57
  4. Step 4: Simplify right side
    261,908.01x = 33,165,277,190.38
  5. Step 5: Solve for x
    x = 33,165,277,190.38/261,908.01
  6. Step 6: Final answer
    x = 126,629.49

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1.5x scale

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.