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Finding the Fourth Proportional to 274,246.90, 411,370.35 and 218,950.90

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Solution

The fourth proportional to 274,246.90, 411,370.35 and 218,950.90 is: 328,426.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,246.90 : 411,370.35 = 218,950.90 : x
  2. Step 2: Convert to fraction form
    274,246.90/411,370.35 = 218,950.90/x
  3. Step 3: Cross multiply
    274,246.90x = 411,370.35 × 218,950.90
  4. Step 4: Simplify right side
    274,246.90x = 90,069,908,365.82
  5. Step 5: Solve for x
    x = 90,069,908,365.82/274,246.90
  6. Step 6: Final answer
    x = 328,426.35

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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.