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Finding the Fourth Proportional to 268,970.40, 403,309.80 and 111,020.40

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Solution

The fourth proportional to 268,970.40, 403,309.80 and 111,020.40 is: 166,470.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,970.40 : 403,309.80 = 111,020.40 : x
  2. Step 2: Convert to fraction form
    268,970.40/403,309.80 = 111,020.40/x
  3. Step 3: Cross multiply
    268,970.40x = 403,309.80 × 111,020.40
  4. Step 4: Simplify right side
    268,970.40x = 44,775,615,319.92
  5. Step 5: Solve for x
    x = 44,775,615,319.92/268,970.40
  6. Step 6: Final answer
    x = 166,470.42

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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.