Home / 209,321.39-288,854.79-118,683.48

Finding the Fourth Proportional to 209,321.39, 288,854.79 and 118,683.48

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Solution

The fourth proportional to 209,321.39, 288,854.79 and 118,683.48 is: 163,778.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,321.39 : 288,854.79 = 118,683.48 : x
  2. Step 2: Convert to fraction form
    209,321.39/288,854.79 = 118,683.48/x
  3. Step 3: Cross multiply
    209,321.39x = 288,854.79 × 118,683.48
  4. Step 4: Simplify right side
    209,321.39x = 34,282,291,691.87
  5. Step 5: Solve for x
    x = 34,282,291,691.87/209,321.39
  6. Step 6: Final answer
    x = 163,778.25

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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.