Home / 513,531.79-770,142.16-139,506.19

Finding the Fourth Proportional to 513,531.79, 770,142.16 and 139,506.19

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Solution

The fourth proportional to 513,531.79, 770,142.16 and 139,506.19 is: 209,217.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,531.79 : 770,142.16 = 139,506.19 : x
  2. Step 2: Convert to fraction form
    513,531.79/770,142.16 = 139,506.19/x
  3. Step 3: Cross multiply
    513,531.79x = 770,142.16 × 139,506.19
  4. Step 4: Simplify right side
    513,531.79x = 107,439,598,499.97
  5. Step 5: Solve for x
    x = 107,439,598,499.97/513,531.79
  6. Step 6: Final answer
    x = 209,217.04

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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.