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Finding the Fourth Proportional to 218,364.80, 301,341.48 and 122,869.58

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Solution

The fourth proportional to 218,364.80, 301,341.48 and 122,869.58 is: 169,558.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,364.80 : 301,341.48 = 122,869.58 : x
  2. Step 2: Convert to fraction form
    218,364.80/301,341.48 = 122,869.58/x
  3. Step 3: Cross multiply
    218,364.80x = 301,341.48 × 122,869.58
  4. Step 4: Simplify right side
    218,364.80x = 37,025,701,084.18
  5. Step 5: Solve for x
    x = 37,025,701,084.18/218,364.80
  6. Step 6: Final answer
    x = 169,558.93

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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.