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Finding the Fourth Proportional to 268,907.76, 403,372.80 and 79,368.16

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Solution

The fourth proportional to 268,907.76, 403,372.80 and 79,368.16 is: 119,055.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,907.76 : 403,372.80 = 79,368.16 : x
  2. Step 2: Convert to fraction form
    268,907.76/403,372.80 = 79,368.16/x
  3. Step 3: Cross multiply
    268,907.76x = 403,372.80 × 79,368.16
  4. Step 4: Simplify right side
    268,907.76x = 32,014,956,930.05
  5. Step 5: Solve for x
    x = 32,014,956,930.05/268,907.76
  6. Step 6: Final answer
    x = 119,055.53

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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.