Home / 385,977.28-532,642.80-216,217.48

Finding the Fourth Proportional to 385,977.28, 532,642.80 and 216,217.48

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Solution

The fourth proportional to 385,977.28, 532,642.80 and 216,217.48 is: 298,376.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,977.28 : 532,642.80 = 216,217.48 : x
  2. Step 2: Convert to fraction form
    385,977.28/532,642.80 = 216,217.48/x
  3. Step 3: Cross multiply
    385,977.28x = 532,642.80 × 216,217.48
  4. Step 4: Simplify right side
    385,977.28x = 115,166,683,956.14
  5. Step 5: Solve for x
    x = 115,166,683,956.14/385,977.28
  6. Step 6: Final answer
    x = 298,376.85

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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.