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Finding the Fourth Proportional to 283,145.85, 424,220.54 and 266,289.21

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Solution

The fourth proportional to 283,145.85, 424,220.54 and 266,289.21 is: 398,965.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,145.85 : 424,220.54 = 266,289.21 : x
  2. Step 2: Convert to fraction form
    283,145.85/424,220.54 = 266,289.21/x
  3. Step 3: Cross multiply
    283,145.85x = 424,220.54 × 266,289.21
  4. Step 4: Simplify right side
    283,145.85x = 112,965,350,341.27
  5. Step 5: Solve for x
    x = 112,965,350,341.27/283,145.85
  6. Step 6: Final answer
    x = 398,965.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.