Home / 282,822.08-390,294.72-155,499.84

Finding the Fourth Proportional to 282,822.08, 390,294.72 and 155,499.84

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Solution

The fourth proportional to 282,822.08, 390,294.72 and 155,499.84 is: 214,589.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,822.08 : 390,294.72 = 155,499.84 : x
  2. Step 2: Convert to fraction form
    282,822.08/390,294.72 = 155,499.84/x
  3. Step 3: Cross multiply
    282,822.08x = 390,294.72 × 155,499.84
  4. Step 4: Simplify right side
    282,822.08x = 60,690,766,512.84
  5. Step 5: Solve for x
    x = 60,690,766,512.84/282,822.08
  6. Step 6: Final answer
    x = 214,589.92

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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.