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Finding the Fourth Proportional to 310,655.84, 428,601.93 and 253,196.46

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Solution

The fourth proportional to 310,655.84, 428,601.93 and 253,196.46 is: 349,327.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,655.84 : 428,601.93 = 253,196.46 : x
  2. Step 2: Convert to fraction form
    310,655.84/428,601.93 = 253,196.46/x
  3. Step 3: Cross multiply
    310,655.84x = 428,601.93 × 253,196.46
  4. Step 4: Simplify right side
    310,655.84x = 108,520,491,425.17
  5. Step 5: Solve for x
    x = 108,520,491,425.17/310,655.84
  6. Step 6: Final answer
    x = 349,327.07

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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.