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Finding the Fourth Proportional to 248,111.40, 372,215.70 and 105,956.40

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Solution

The fourth proportional to 248,111.40, 372,215.70 and 105,956.40 is: 158,955.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,111.40 : 372,215.70 = 105,956.40 : x
  2. Step 2: Convert to fraction form
    248,111.40/372,215.70 = 105,956.40/x
  3. Step 3: Cross multiply
    248,111.40x = 372,215.70 × 105,956.40
  4. Step 4: Simplify right side
    248,111.40x = 39,438,635,595.48
  5. Step 5: Solve for x
    x = 39,438,635,595.48/248,111.40
  6. Step 6: Final answer
    x = 158,955.35

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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.