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Finding the Fourth Proportional to 209,630.95, 314,464.65 and 67,490.53

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Solution

The fourth proportional to 209,630.95, 314,464.65 and 67,490.53 is: 101,241.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,630.95 : 314,464.65 = 67,490.53 : x
  2. Step 2: Convert to fraction form
    209,630.95/314,464.65 = 67,490.53/x
  3. Step 3: Cross multiply
    209,630.95x = 314,464.65 × 67,490.53
  4. Step 4: Simplify right side
    209,630.95x = 21,223,385,894.76
  5. Step 5: Solve for x
    x = 21,223,385,894.76/209,630.95
  6. Step 6: Final answer
    x = 101,241.66

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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.