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Finding the Fourth Proportional to 307,625.90, 429,626.50 and 307,625.90

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Solution

The fourth proportional to 307,625.90, 429,626.50 and 307,625.90 is: 429,626.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,625.90 : 429,626.50 = 307,625.90 : x
  2. Step 2: Convert to fraction form
    307,625.90/429,626.50 = 307,625.90/x
  3. Step 3: Cross multiply
    307,625.90x = 429,626.50 × 307,625.90
  4. Step 4: Simplify right side
    307,625.90x = 132,164,238,726.35
  5. Step 5: Solve for x
    x = 132,164,238,726.35/307,625.90
  6. Step 6: Final answer
    x = 429,626.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.