Home / 282,754.52-390,191.34-155,429.20

Finding the Fourth Proportional to 282,754.52, 390,191.34 and 155,429.20

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Solution

The fourth proportional to 282,754.52, 390,191.34 and 155,429.20 is: 214,486.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,754.52 : 390,191.34 = 155,429.20 : x
  2. Step 2: Convert to fraction form
    282,754.52/390,191.34 = 155,429.20/x
  3. Step 3: Cross multiply
    282,754.52x = 390,191.34 × 155,429.20
  4. Step 4: Simplify right side
    282,754.52x = 60,647,127,823.13
  5. Step 5: Solve for x
    x = 60,647,127,823.13/282,754.52
  6. Step 6: Final answer
    x = 214,486.86

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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.