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Finding the Fourth Proportional to 290,652.80, 435,979.20 and 274,323.20

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Solution

The fourth proportional to 290,652.80, 435,979.20 and 274,323.20 is: 411,484.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,652.80 : 435,979.20 = 274,323.20 : x
  2. Step 2: Convert to fraction form
    290,652.80/435,979.20 = 274,323.20/x
  3. Step 3: Cross multiply
    290,652.80x = 435,979.20 × 274,323.20
  4. Step 4: Simplify right side
    290,652.80x = 119,599,209,277.44
  5. Step 5: Solve for x
    x = 119,599,209,277.44/290,652.80
  6. Step 6: Final answer
    x = 411,484.80

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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.