Home / 282,742.56-390,189.60-155,423.52

Finding the Fourth Proportional to 282,742.56, 390,189.60 and 155,423.52

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Solution

The fourth proportional to 282,742.56, 390,189.60 and 155,423.52 is: 214,487.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,742.56 : 390,189.60 = 155,423.52 : x
  2. Step 2: Convert to fraction form
    282,742.56/390,189.60 = 155,423.52/x
  3. Step 3: Cross multiply
    282,742.56x = 390,189.60 × 155,423.52
  4. Step 4: Simplify right side
    282,742.56x = 60,644,641,099.39
  5. Step 5: Solve for x
    x = 60,644,641,099.39/282,742.56
  6. Step 6: Final answer
    x = 214,487.13

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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.