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Finding the Fourth Proportional to 377,512.65, 520,989.93 and 216,378.14

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Solution

The fourth proportional to 377,512.65, 520,989.93 and 216,378.14 is: 298,614.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,512.65 : 520,989.93 = 216,378.14 : x
  2. Step 2: Convert to fraction form
    377,512.65/520,989.93 = 216,378.14/x
  3. Step 3: Cross multiply
    377,512.65x = 520,989.93 × 216,378.14
  4. Step 4: Simplify right side
    377,512.65x = 112,730,829,407.18
  5. Step 5: Solve for x
    x = 112,730,829,407.18/377,512.65
  6. Step 6: Final answer
    x = 298,614.71

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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.