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Finding the Fourth Proportional to 218,595.39, 301,657.10 and 121,798.86

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Solution

The fourth proportional to 218,595.39, 301,657.10 and 121,798.86 is: 168,079.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,595.39 : 301,657.10 = 121,798.86 : x
  2. Step 2: Convert to fraction form
    218,595.39/301,657.10 = 121,798.86/x
  3. Step 3: Cross multiply
    218,595.39x = 301,657.10 × 121,798.86
  4. Step 4: Simplify right side
    218,595.39x = 36,741,489,438.24
  5. Step 5: Solve for x
    x = 36,741,489,438.24/218,595.39
  6. Step 6: Final answer
    x = 168,079.89

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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.