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Finding the Fourth Proportional to 385,796.70, 532,387.38 and 213,707.76

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Solution

The fourth proportional to 385,796.70, 532,387.38 and 213,707.76 is: 294,910.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,796.70 : 532,387.38 = 213,707.76 : x
  2. Step 2: Convert to fraction form
    385,796.70/532,387.38 = 213,707.76/x
  3. Step 3: Cross multiply
    385,796.70x = 532,387.38 × 213,707.76
  4. Step 4: Simplify right side
    385,796.70x = 113,775,314,432.07
  5. Step 5: Solve for x
    x = 113,775,314,432.07/385,796.70
  6. Step 6: Final answer
    x = 294,910.02

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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.