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Finding the Fourth Proportional to 389,757.53, 537,867.01 and 210,909.53

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Solution

The fourth proportional to 389,757.53, 537,867.01 and 210,909.53 is: 291,056.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,757.53 : 537,867.01 = 210,909.53 : x
  2. Step 2: Convert to fraction form
    389,757.53/537,867.01 = 210,909.53/x
  3. Step 3: Cross multiply
    389,757.53x = 537,867.01 × 210,909.53
  4. Step 4: Simplify right side
    389,757.53x = 113,441,278,281.61
  5. Step 5: Solve for x
    x = 113,441,278,281.61/389,757.53
  6. Step 6: Final answer
    x = 291,056.03

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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.