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Finding the Fourth Proportional to 354,890.95, 531,797.80 and 260,184.19

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Solution

The fourth proportional to 354,890.95, 531,797.80 and 260,184.19 is: 389,881.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,890.95 : 531,797.80 = 260,184.19 : x
  2. Step 2: Convert to fraction form
    354,890.95/531,797.80 = 260,184.19/x
  3. Step 3: Cross multiply
    354,890.95x = 531,797.80 × 260,184.19
  4. Step 4: Simplify right side
    354,890.95x = 138,365,379,836.78
  5. Step 5: Solve for x
    x = 138,365,379,836.78/354,890.95
  6. Step 6: Final answer
    x = 389,881.40

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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.