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Finding the Fourth Proportional to 377,352.78, 520,738.40 and 216,302.78

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Solution

The fourth proportional to 377,352.78, 520,738.40 and 216,302.78 is: 298,493.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,352.78 : 520,738.40 = 216,302.78 : x
  2. Step 2: Convert to fraction form
    377,352.78/520,738.40 = 216,302.78/x
  3. Step 3: Cross multiply
    377,352.78x = 520,738.40 × 216,302.78
  4. Step 4: Simplify right side
    377,352.78x = 112,637,163,572.75
  5. Step 5: Solve for x
    x = 112,637,163,572.75/377,352.78
  6. Step 6: Final answer
    x = 298,493.00

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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.