Home / 282,757.19-390,195-155,431.87

Finding the Fourth Proportional to 282,757.19, 390,195 and 155,431.87

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Solution

The fourth proportional to 282,757.19, 390,195 and 155,431.87 is: 214,490.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,757.19 : 390,195 = 155,431.87 : x
  2. Step 2: Convert to fraction form
    282,757.19/390,195 = 155,431.87/x
  3. Step 3: Cross multiply
    282,757.19x = 390,195 × 155,431.87
  4. Step 4: Simplify right side
    282,757.19x = 60,648,737,539.16
  5. Step 5: Solve for x
    x = 60,648,737,539.16/282,757.19
  6. Step 6: Final answer
    x = 214,490.53

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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.