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Finding the Fourth Proportional to 385,790.94, 532,376.82 and 216,016.56

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Solution

The fourth proportional to 385,790.94, 532,376.82 and 216,016.56 is: 298,094.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,790.94 : 532,376.82 = 216,016.56 : x
  2. Step 2: Convert to fraction form
    385,790.94/532,376.82 = 216,016.56/x
  3. Step 3: Cross multiply
    385,790.94x = 532,376.82 × 216,016.56
  4. Step 4: Simplify right side
    385,790.94x = 115,002,209,280.14
  5. Step 5: Solve for x
    x = 115,002,209,280.14/385,790.94
  6. Step 6: Final answer
    x = 298,094.63

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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.