Home / 282,749.90-390,184.53-155,424.38

Finding the Fourth Proportional to 282,749.90, 390,184.53 and 155,424.38

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Solution

The fourth proportional to 282,749.90, 390,184.53 and 155,424.38 is: 214,479.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,749.90 : 390,184.53 = 155,424.38 : x
  2. Step 2: Convert to fraction form
    282,749.90/390,184.53 = 155,424.38/x
  3. Step 3: Cross multiply
    282,749.90x = 390,184.53 × 155,424.38
  4. Step 4: Simplify right side
    282,749.90x = 60,644,188,660.84
  5. Step 5: Solve for x
    x = 60,644,188,660.84/282,749.90
  6. Step 6: Final answer
    x = 214,479.97

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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.