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Finding the Fourth Proportional to 315,527.02, 435,423.99 and 172,286.62

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Solution

The fourth proportional to 315,527.02, 435,423.99 and 172,286.62 is: 237,753.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,527.02 : 435,423.99 = 172,286.62 : x
  2. Step 2: Convert to fraction form
    315,527.02/435,423.99 = 172,286.62/x
  3. Step 3: Cross multiply
    315,527.02x = 435,423.99 × 172,286.62
  4. Step 4: Simplify right side
    315,527.02x = 75,017,727,504.01
  5. Step 5: Solve for x
    x = 75,017,727,504.01/315,527.02
  6. Step 6: Final answer
    x = 237,753.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.