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Finding the Fourth Proportional to 377,889.84, 521,471.16 and 216,629.28

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Solution

The fourth proportional to 377,889.84, 521,471.16 and 216,629.28 is: 298,938.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,889.84 : 521,471.16 = 216,629.28 : x
  2. Step 2: Convert to fraction form
    377,889.84/521,471.16 = 216,629.28/x
  3. Step 3: Cross multiply
    377,889.84x = 521,471.16 × 216,629.28
  4. Step 4: Simplify right side
    377,889.84x = 112,965,921,931.57
  5. Step 5: Solve for x
    x = 112,965,921,931.57/377,889.84
  6. Step 6: Final answer
    x = 298,938.76

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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.