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Finding the Fourth Proportional to 290,681.80, 436,022.70 and 274,352.20

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Solution

The fourth proportional to 290,681.80, 436,022.70 and 274,352.20 is: 411,528.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,681.80 : 436,022.70 = 274,352.20 : x
  2. Step 2: Convert to fraction form
    290,681.80/436,022.70 = 274,352.20/x
  3. Step 3: Cross multiply
    290,681.80x = 436,022.70 × 274,352.20
  4. Step 4: Simplify right side
    290,681.80x = 119,623,786,994.94
  5. Step 5: Solve for x
    x = 119,623,786,994.94/290,681.80
  6. Step 6: Final answer
    x = 411,528.30

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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.