Home / 209,213.78-288,705.51-118,564.44

Finding the Fourth Proportional to 209,213.78, 288,705.51 and 118,564.44

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Solution

The fourth proportional to 209,213.78, 288,705.51 and 118,564.44 is: 163,613.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,213.78 : 288,705.51 = 118,564.44 : x
  2. Step 2: Convert to fraction form
    209,213.78/288,705.51 = 118,564.44/x
  3. Step 3: Cross multiply
    209,213.78x = 288,705.51 × 118,564.44
  4. Step 4: Simplify right side
    209,213.78x = 34,230,207,118.06
  5. Step 5: Solve for x
    x = 34,230,207,118.06/209,213.78
  6. Step 6: Final answer
    x = 163,613.54

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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.