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Finding the Fourth Proportional to 209,483.98, 314,275.19 and 69,242.61

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Solution

The fourth proportional to 209,483.98, 314,275.19 and 69,242.61 is: 103,880.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,483.98 : 314,275.19 = 69,242.61 : x
  2. Step 2: Convert to fraction form
    209,483.98/314,275.19 = 69,242.61/x
  3. Step 3: Cross multiply
    209,483.98x = 314,275.19 × 69,242.61
  4. Step 4: Simplify right side
    209,483.98x = 21,761,232,496.26
  5. Step 5: Solve for x
    x = 21,761,232,496.26/209,483.98
  6. Step 6: Final answer
    x = 103,880.17

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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.