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Finding the Fourth Proportional to 542,611.56, 748,848.85 and 300,972.21

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Solution

The fourth proportional to 542,611.56, 748,848.85 and 300,972.21 is: 415,366.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,611.56 : 748,848.85 = 300,972.21 : x
  2. Step 2: Convert to fraction form
    542,611.56/748,848.85 = 300,972.21/x
  3. Step 3: Cross multiply
    542,611.56x = 748,848.85 × 300,972.21
  4. Step 4: Simplify right side
    542,611.56x = 225,382,689,779.85
  5. Step 5: Solve for x
    x = 225,382,689,779.85/542,611.56
  6. Step 6: Final answer
    x = 415,366.55

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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.