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Finding the Fourth Proportional to 377,030.42, 520,552.50 and 289,659.88

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Solution

The fourth proportional to 377,030.42, 520,552.50 and 289,659.88 is: 399,923.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,030.42 : 520,552.50 = 289,659.88 : x
  2. Step 2: Convert to fraction form
    377,030.42/520,552.50 = 289,659.88/x
  3. Step 3: Cross multiply
    377,030.42x = 520,552.50 × 289,659.88
  4. Step 4: Simplify right side
    377,030.42x = 150,783,174,248.17
  5. Step 5: Solve for x
    x = 150,783,174,248.17/377,030.42
  6. Step 6: Final answer
    x = 399,923.10

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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.