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Finding the Fourth Proportional to 152,381.01, 228,420.84 and 72,278.49

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Solution

The fourth proportional to 152,381.01, 228,420.84 and 72,278.49 is: 108,346.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,381.01 : 228,420.84 = 72,278.49 : x
  2. Step 2: Convert to fraction form
    152,381.01/228,420.84 = 72,278.49/x
  3. Step 3: Cross multiply
    152,381.01x = 228,420.84 × 72,278.49
  4. Step 4: Simplify right side
    152,381.01x = 16,509,913,399.73
  5. Step 5: Solve for x
    x = 16,509,913,399.73/152,381.01
  6. Step 6: Final answer
    x = 108,346.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.