Home / 282,757.15-390,194.95-155,431.83

Finding the Fourth Proportional to 282,757.15, 390,194.95 and 155,431.83

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Solution

The fourth proportional to 282,757.15, 390,194.95 and 155,431.83 is: 214,490.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,757.15 : 390,194.95 = 155,431.83 : x
  2. Step 2: Convert to fraction form
    282,757.15/390,194.95 = 155,431.83/x
  3. Step 3: Cross multiply
    282,757.15x = 390,194.95 × 155,431.83
  4. Step 4: Simplify right side
    282,757.15x = 60,648,715,135.26
  5. Step 5: Solve for x
    x = 60,648,715,135.26/282,757.15
  6. Step 6: Final answer
    x = 214,490.47

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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.