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Finding the Fourth Proportional to 430,632, 645,528.87 and 205,934.13

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Solution

The fourth proportional to 430,632, 645,528.87 and 205,934.13 is: 308,700.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,632 : 645,528.87 = 205,934.13 : x
  2. Step 2: Convert to fraction form
    430,632/645,528.87 = 205,934.13/x
  3. Step 3: Cross multiply
    430,632x = 645,528.87 × 205,934.13
  4. Step 4: Simplify right side
    430,632x = 132,936,426,233.33
  5. Step 5: Solve for x
    x = 132,936,426,233.33/430,632
  6. Step 6: Final answer
    x = 308,700.76

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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.