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Finding the Fourth Proportional to 445,559.60, 668,339.40 and 268,412.60

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Solution

The fourth proportional to 445,559.60, 668,339.40 and 268,412.60 is: 402,618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,559.60 : 668,339.40 = 268,412.60 : x
  2. Step 2: Convert to fraction form
    445,559.60/668,339.40 = 268,412.60/x
  3. Step 3: Cross multiply
    445,559.60x = 668,339.40 × 268,412.60
  4. Step 4: Simplify right side
    445,559.60x = 179,390,716,036.44
  5. Step 5: Solve for x
    x = 179,390,716,036.44/445,559.60
  6. Step 6: Final answer
    x = 402,618.90

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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.