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Finding the Fourth Proportional to 343,255.12, 514,931.88 and 130,100.99

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Solution

The fourth proportional to 343,255.12, 514,931.88 and 130,100.99 is: 195,170.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,255.12 : 514,931.88 = 130,100.99 : x
  2. Step 2: Convert to fraction form
    343,255.12/514,931.88 = 130,100.99/x
  3. Step 3: Cross multiply
    343,255.12x = 514,931.88 × 130,100.99
  4. Step 4: Simplify right side
    343,255.12x = 66,993,145,283.78
  5. Step 5: Solve for x
    x = 66,993,145,283.78/343,255.12
  6. Step 6: Final answer
    x = 195,170.13

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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.