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Finding the Fourth Proportional to 270,862.76, 403,434.28 and 256,637.54

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Solution

The fourth proportional to 270,862.76, 403,434.28 and 256,637.54 is: 382,246.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,862.76 : 403,434.28 = 256,637.54 : x
  2. Step 2: Convert to fraction form
    270,862.76/403,434.28 = 256,637.54/x
  3. Step 3: Cross multiply
    270,862.76x = 403,434.28 × 256,637.54
  4. Step 4: Simplify right side
    270,862.76x = 103,536,381,170.87
  5. Step 5: Solve for x
    x = 103,536,381,170.87/270,862.76
  6. Step 6: Final answer
    x = 382,246.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.