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Finding the Fourth Proportional to 334,961.31, 502,441.97 and 85,643.31

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Solution

The fourth proportional to 334,961.31, 502,441.97 and 85,643.31 is: 128,464.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,961.31 : 502,441.97 = 85,643.31 : x
  2. Step 2: Convert to fraction form
    334,961.31/502,441.97 = 85,643.31/x
  3. Step 3: Cross multiply
    334,961.31x = 502,441.97 × 85,643.31
  4. Step 4: Simplify right side
    334,961.31x = 43,030,793,393.72
  5. Step 5: Solve for x
    x = 43,030,793,393.72/334,961.31
  6. Step 6: Final answer
    x = 128,464.97

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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.