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Finding the Fourth Proportional to 542,120.30, 813,220.42 and 142,758.32

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Solution

The fourth proportional to 542,120.30, 813,220.42 and 142,758.32 is: 214,148.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,120.30 : 813,220.42 = 142,758.32 : x
  2. Step 2: Convert to fraction form
    542,120.30/813,220.42 = 142,758.32/x
  3. Step 3: Cross multiply
    542,120.30x = 813,220.42 × 142,758.32
  4. Step 4: Simplify right side
    542,120.30x = 116,093,980,948.89
  5. Step 5: Solve for x
    x = 116,093,980,948.89/542,120.30
  6. Step 6: Final answer
    x = 214,148.01

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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.