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Finding the Fourth Proportional to 386,334, 533,315.52 and 243,304.20

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Solution

The fourth proportional to 386,334, 533,315.52 and 243,304.20 is: 335,869.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,334 : 533,315.52 = 243,304.20 : x
  2. Step 2: Convert to fraction form
    386,334/533,315.52 = 243,304.20/x
  3. Step 3: Cross multiply
    386,334x = 533,315.52 × 243,304.20
  4. Step 4: Simplify right side
    386,334x = 129,757,905,941.18
  5. Step 5: Solve for x
    x = 129,757,905,941.18/386,334
  6. Step 6: Final answer
    x = 335,869.76

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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.