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Finding the Fourth Proportional to 624,405.40, 936,649.95 and 219,549.13

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Solution

The fourth proportional to 624,405.40, 936,649.95 and 219,549.13 is: 329,338.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,405.40 : 936,649.95 = 219,549.13 : x
  2. Step 2: Convert to fraction form
    624,405.40/936,649.95 = 219,549.13/x
  3. Step 3: Cross multiply
    624,405.40x = 936,649.95 × 219,549.13
  4. Step 4: Simplify right side
    624,405.40x = 205,640,681,637.04
  5. Step 5: Solve for x
    x = 205,640,681,637.04/624,405.40
  6. Step 6: Final answer
    x = 329,338.41

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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.