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Finding the Fourth Proportional to 248,145.40, 372,218.10 and 70,658.20

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Solution

The fourth proportional to 248,145.40, 372,218.10 and 70,658.20 is: 105,987.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,145.40 : 372,218.10 = 70,658.20 : x
  2. Step 2: Convert to fraction form
    248,145.40/372,218.10 = 70,658.20/x
  3. Step 3: Cross multiply
    248,145.40x = 372,218.10 × 70,658.20
  4. Step 4: Simplify right side
    248,145.40x = 26,300,260,953.42
  5. Step 5: Solve for x
    x = 26,300,260,953.42/248,145.40
  6. Step 6: Final answer
    x = 105,987.30

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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.