Home / 282,439.40-389,764.85-153,376.72

Finding the Fourth Proportional to 282,439.40, 389,764.85 and 153,376.72

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Solution

The fourth proportional to 282,439.40, 389,764.85 and 153,376.72 is: 211,659.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,439.40 : 389,764.85 = 153,376.72 : x
  2. Step 2: Convert to fraction form
    282,439.40/389,764.85 = 153,376.72/x
  3. Step 3: Cross multiply
    282,439.40x = 389,764.85 × 153,376.72
  4. Step 4: Simplify right side
    282,439.40x = 59,780,852,523.00
  5. Step 5: Solve for x
    x = 59,780,852,523.00/282,439.40
  6. Step 6: Final answer
    x = 211,659.04

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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.