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Finding the Fourth Proportional to 218,818.13, 301,969.02 and 118,216.13

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Solution

The fourth proportional to 218,818.13, 301,969.02 and 118,216.13 is: 163,138.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,818.13 : 301,969.02 = 118,216.13 : x
  2. Step 2: Convert to fraction form
    218,818.13/301,969.02 = 118,216.13/x
  3. Step 3: Cross multiply
    218,818.13x = 301,969.02 × 118,216.13
  4. Step 4: Simplify right side
    218,818.13x = 35,697,607,414.45
  5. Step 5: Solve for x
    x = 35,697,607,414.45/218,818.13
  6. Step 6: Final answer
    x = 163,138.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.