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Finding the Fourth Proportional to 248,852.80, 373,279.20 and 209,972.80

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Solution

The fourth proportional to 248,852.80, 373,279.20 and 209,972.80 is: 314,959.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,852.80 : 373,279.20 = 209,972.80 : x
  2. Step 2: Convert to fraction form
    248,852.80/373,279.20 = 209,972.80/x
  3. Step 3: Cross multiply
    248,852.80x = 373,279.20 × 209,972.80
  4. Step 4: Simplify right side
    248,852.80x = 78,378,478,805.76
  5. Step 5: Solve for x
    x = 78,378,478,805.76/248,852.80
  6. Step 6: Final answer
    x = 314,959.20

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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.