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Finding the Fourth Proportional to 260,065.60, 389,320.80 and 154,830.40

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Solution

The fourth proportional to 260,065.60, 389,320.80 and 154,830.40 is: 231,782.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,065.60 : 389,320.80 = 154,830.40 : x
  2. Step 2: Convert to fraction form
    260,065.60/389,320.80 = 154,830.40/x
  3. Step 3: Cross multiply
    260,065.60x = 389,320.80 × 154,830.40
  4. Step 4: Simplify right side
    260,065.60x = 60,278,695,192.32
  5. Step 5: Solve for x
    x = 60,278,695,192.32/260,065.60
  6. Step 6: Final answer
    x = 231,782.65

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