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Finding the Fourth Proportional to 310,665.32, 428,862.54 and 234,215.36

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Solution

The fourth proportional to 310,665.32, 428,862.54 and 234,215.36 is: 323,326.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,665.32 : 428,862.54 = 234,215.36 : x
  2. Step 2: Convert to fraction form
    310,665.32/428,862.54 = 234,215.36/x
  3. Step 3: Cross multiply
    310,665.32x = 428,862.54 × 234,215.36
  4. Step 4: Simplify right side
    310,665.32x = 100,446,194,196.61
  5. Step 5: Solve for x
    x = 100,446,194,196.61/310,665.32
  6. Step 6: Final answer
    x = 323,326.06

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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.