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Finding the Fourth Proportional to 218,810.66, 328,216.03 and 69,066.07

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Solution

The fourth proportional to 218,810.66, 328,216.03 and 69,066.07 is: 103,599.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,810.66 : 328,216.03 = 69,066.07 : x
  2. Step 2: Convert to fraction form
    218,810.66/328,216.03 = 69,066.07/x
  3. Step 3: Cross multiply
    218,810.66x = 328,216.03 × 69,066.07
  4. Step 4: Simplify right side
    218,810.66x = 22,668,590,309.90
  5. Step 5: Solve for x
    x = 22,668,590,309.90/218,810.66
  6. Step 6: Final answer
    x = 103,599.12

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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.