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Finding the Fourth Proportional to 377,896, 520,888.72 and 255,350.16

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Solution

The fourth proportional to 377,896, 520,888.72 and 255,350.16 is: 351,972.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,896 : 520,888.72 = 255,350.16 : x
  2. Step 2: Convert to fraction form
    377,896/520,888.72 = 255,350.16/x
  3. Step 3: Cross multiply
    377,896x = 520,888.72 × 255,350.16
  4. Step 4: Simplify right side
    377,896x = 133,009,017,994.20
  5. Step 5: Solve for x
    x = 133,009,017,994.20/377,896
  6. Step 6: Final answer
    x = 351,972.55

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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.