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Finding the Fourth Proportional to 199,423.60, 299,329.80 and 99,696.40

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Solution

The fourth proportional to 199,423.60, 299,329.80 and 99,696.40 is: 149,641.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,423.60 : 299,329.80 = 99,696.40 : x
  2. Step 2: Convert to fraction form
    199,423.60/299,329.80 = 99,696.40/x
  3. Step 3: Cross multiply
    199,423.60x = 299,329.80 × 99,696.40
  4. Step 4: Simplify right side
    199,423.60x = 29,842,103,472.72
  5. Step 5: Solve for x
    x = 29,842,103,472.72/199,423.60
  6. Step 6: Final answer
    x = 149,641.78

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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.