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Finding the Fourth Proportional to 218,608.23, 301,671.39 and 121,807.08

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Solution

The fourth proportional to 218,608.23, 301,671.39 and 121,807.08 is: 168,089.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,608.23 : 301,671.39 = 121,807.08 : x
  2. Step 2: Convert to fraction form
    218,608.23/301,671.39 = 121,807.08/x
  3. Step 3: Cross multiply
    218,608.23x = 301,671.39 × 121,807.08
  4. Step 4: Simplify right side
    218,608.23x = 36,745,712,269.38
  5. Step 5: Solve for x
    x = 36,745,712,269.38/218,608.23
  6. Step 6: Final answer
    x = 168,089.34

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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.