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Finding the Fourth Proportional to 377,476.70, 520,939.40 and 216,358.59

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Solution

The fourth proportional to 377,476.70, 520,939.40 and 216,358.59 is: 298,587.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,476.70 : 520,939.40 = 216,358.59 : x
  2. Step 2: Convert to fraction form
    377,476.70/520,939.40 = 216,358.59/x
  3. Step 3: Cross multiply
    377,476.70x = 520,939.40 × 216,358.59
  4. Step 4: Simplify right side
    377,476.70x = 112,709,714,059.45
  5. Step 5: Solve for x
    x = 112,709,714,059.45/377,476.70
  6. Step 6: Final answer
    x = 298,587.21

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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.