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Finding the Fourth Proportional to 377,385.76, 520,790.34 and 216,243.28

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Solution

The fourth proportional to 377,385.76, 520,790.34 and 216,243.28 is: 298,414.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,385.76 : 520,790.34 = 216,243.28 : x
  2. Step 2: Convert to fraction form
    377,385.76/520,790.34 = 216,243.28/x
  3. Step 3: Cross multiply
    377,385.76x = 520,790.34 × 216,243.28
  4. Step 4: Simplify right side
    377,385.76x = 112,617,411,313.92
  5. Step 5: Solve for x
    x = 112,617,411,313.92/377,385.76
  6. Step 6: Final answer
    x = 298,414.58

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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.