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Finding the Fourth Proportional to 310,616.94, 428,548.29 and 253,157.46

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Solution

The fourth proportional to 310,616.94, 428,548.29 and 253,157.46 is: 349,273.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,616.94 : 428,548.29 = 253,157.46 : x
  2. Step 2: Convert to fraction form
    310,616.94/428,548.29 = 253,157.46/x
  3. Step 3: Cross multiply
    310,616.94x = 428,548.29 × 253,157.46
  4. Step 4: Simplify right side
    310,616.94x = 108,490,196,583.74
  5. Step 5: Solve for x
    x = 108,490,196,583.74/310,616.94
  6. Step 6: Final answer
    x = 349,273.28

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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.