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Finding the Fourth Proportional to 345,114.80, 517,672.20 and 330,059.60

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Solution

The fourth proportional to 345,114.80, 517,672.20 and 330,059.60 is: 495,089.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,114.80 : 517,672.20 = 330,059.60 : x
  2. Step 2: Convert to fraction form
    345,114.80/517,672.20 = 330,059.60/x
  3. Step 3: Cross multiply
    345,114.80x = 517,672.20 × 330,059.60
  4. Step 4: Simplify right side
    345,114.80x = 170,862,679,263.12
  5. Step 5: Solve for x
    x = 170,862,679,263.12/345,114.80
  6. Step 6: Final answer
    x = 495,089.40

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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.