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Finding the Fourth Proportional to 389,065.29, 583,652.52 and 136,287.90

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Solution

The fourth proportional to 389,065.29, 583,652.52 and 136,287.90 is: 204,450.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,065.29 : 583,652.52 = 136,287.90 : x
  2. Step 2: Convert to fraction form
    389,065.29/583,652.52 = 136,287.90/x
  3. Step 3: Cross multiply
    389,065.29x = 583,652.52 × 136,287.90
  4. Step 4: Simplify right side
    389,065.29x = 79,544,776,280.51
  5. Step 5: Solve for x
    x = 79,544,776,280.51/389,065.29
  6. Step 6: Final answer
    x = 204,450.97

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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.