Home / 282,724.38-390,159.54-155,399.94

Finding the Fourth Proportional to 282,724.38, 390,159.54 and 155,399.94

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Solution

The fourth proportional to 282,724.38, 390,159.54 and 155,399.94 is: 214,451.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,724.38 : 390,159.54 = 155,399.94 : x
  2. Step 2: Convert to fraction form
    282,724.38/390,159.54 = 155,399.94/x
  3. Step 3: Cross multiply
    282,724.38x = 390,159.54 × 155,399.94
  4. Step 4: Simplify right side
    282,724.38x = 60,630,769,106.43
  5. Step 5: Solve for x
    x = 60,630,769,106.43/282,724.38
  6. Step 6: Final answer
    x = 214,451.86

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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.