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Finding the Fourth Proportional to 248,897.80, 373,346.70 and 142,172.20

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Solution

The fourth proportional to 248,897.80, 373,346.70 and 142,172.20 is: 213,258.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,897.80 : 373,346.70 = 142,172.20 : x
  2. Step 2: Convert to fraction form
    248,897.80/373,346.70 = 142,172.20/x
  3. Step 3: Cross multiply
    248,897.80x = 373,346.70 × 142,172.20
  4. Step 4: Simplify right side
    248,897.80x = 53,079,521,701.74
  5. Step 5: Solve for x
    x = 53,079,521,701.74/248,897.80
  6. Step 6: Final answer
    x = 213,258.30

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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.