Home / 283,280.72-390,912.55-155,931.44

Finding the Fourth Proportional to 283,280.72, 390,912.55 and 155,931.44

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Solution

The fourth proportional to 283,280.72, 390,912.55 and 155,931.44 is: 215,177.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,280.72 : 390,912.55 = 155,931.44 : x
  2. Step 2: Convert to fraction form
    283,280.72/390,912.55 = 155,931.44/x
  3. Step 3: Cross multiply
    283,280.72x = 390,912.55 × 155,931.44
  4. Step 4: Simplify right side
    283,280.72x = 60,955,554,491.18
  5. Step 5: Solve for x
    x = 60,955,554,491.18/283,280.72
  6. Step 6: Final answer
    x = 215,177.21

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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.