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Finding the Fourth Proportional to 248,061.40, 372,140.70 and 105,906.40

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Solution

The fourth proportional to 248,061.40, 372,140.70 and 105,906.40 is: 158,880.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,061.40 : 372,140.70 = 105,906.40 : x
  2. Step 2: Convert to fraction form
    248,061.40/372,140.70 = 105,906.40/x
  3. Step 3: Cross multiply
    248,061.40x = 372,140.70 × 105,906.40
  4. Step 4: Simplify right side
    248,061.40x = 39,412,081,830.48
  5. Step 5: Solve for x
    x = 39,412,081,830.48/248,061.40
  6. Step 6: Final answer
    x = 158,880.35

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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.