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Finding the Fourth Proportional to 424,859.85, 637,289.97 and 140,550.40

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Solution

The fourth proportional to 424,859.85, 637,289.97 and 140,550.40 is: 210,825.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,859.85 : 637,289.97 = 140,550.40 : x
  2. Step 2: Convert to fraction form
    424,859.85/637,289.97 = 140,550.40/x
  3. Step 3: Cross multiply
    424,859.85x = 637,289.97 × 140,550.40
  4. Step 4: Simplify right side
    424,859.85x = 89,571,360,199.49
  5. Step 5: Solve for x
    x = 89,571,360,199.49/424,859.85
  6. Step 6: Final answer
    x = 210,825.66

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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.