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Finding the Fourth Proportional to 330,423.60, 495,246.60 and 172,570.80

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Solution

The fourth proportional to 330,423.60, 495,246.60 and 172,570.80 is: 258,653.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,423.60 : 495,246.60 = 172,570.80 : x
  2. Step 2: Convert to fraction form
    330,423.60/495,246.60 = 172,570.80/x
  3. Step 3: Cross multiply
    330,423.60x = 495,246.60 × 172,570.80
  4. Step 4: Simplify right side
    330,423.60x = 85,465,101,959.28
  5. Step 5: Solve for x
    x = 85,465,101,959.28/330,423.60
  6. Step 6: Final answer
    x = 258,653.14

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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.