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Finding the Fourth Proportional to 248,143.40, 372,215.10 and 70,656.20

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Solution

The fourth proportional to 248,143.40, 372,215.10 and 70,656.20 is: 105,984.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,143.40 : 372,215.10 = 70,656.20 : x
  2. Step 2: Convert to fraction form
    248,143.40/372,215.10 = 70,656.20/x
  3. Step 3: Cross multiply
    248,143.40x = 372,215.10 × 70,656.20
  4. Step 4: Simplify right side
    248,143.40x = 26,299,304,548.62
  5. Step 5: Solve for x
    x = 26,299,304,548.62/248,143.40
  6. Step 6: Final answer
    x = 105,984.30

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1.5x scale

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.