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Finding the Fourth Proportional to 218,993, 302,211.06 and 118,391.72

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Solution

The fourth proportional to 218,993, 302,211.06 and 118,391.72 is: 163,380.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,993 : 302,211.06 = 118,391.72 : x
  2. Step 2: Convert to fraction form
    218,993/302,211.06 = 118,391.72/x
  3. Step 3: Cross multiply
    218,993x = 302,211.06 × 118,391.72
  4. Step 4: Simplify right side
    218,993x = 35,779,287,196.42
  5. Step 5: Solve for x
    x = 35,779,287,196.42/218,993
  6. Step 6: Final answer
    x = 163,380.96

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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.