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Finding the Fourth Proportional to 303,432.47, 418,500.20 and 194,547.21

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Solution

The fourth proportional to 303,432.47, 418,500.20 and 194,547.21 is: 268,323.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,432.47 : 418,500.20 = 194,547.21 : x
  2. Step 2: Convert to fraction form
    303,432.47/418,500.20 = 194,547.21/x
  3. Step 3: Cross multiply
    303,432.47x = 418,500.20 × 194,547.21
  4. Step 4: Simplify right side
    303,432.47x = 81,418,045,321.71
  5. Step 5: Solve for x
    x = 81,418,045,321.71/303,432.47
  6. Step 6: Final answer
    x = 268,323.44

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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.