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Finding the Fourth Proportional to 260,061.60, 389,314.80 and 154,826.40

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Solution

The fourth proportional to 260,061.60, 389,314.80 and 154,826.40 is: 231,776.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,061.60 : 389,314.80 = 154,826.40 : x
  2. Step 2: Convert to fraction form
    260,061.60/389,314.80 = 154,826.40/x
  3. Step 3: Cross multiply
    260,061.60x = 389,314.80 × 154,826.40
  4. Step 4: Simplify right side
    260,061.60x = 60,276,208,950.72
  5. Step 5: Solve for x
    x = 60,276,208,950.72/260,061.60
  6. Step 6: Final answer
    x = 231,776.66

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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.