Home / 209,067.78-288,504.29-118,421.92

Finding the Fourth Proportional to 209,067.78, 288,504.29 and 118,421.92

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Solution

The fourth proportional to 209,067.78, 288,504.29 and 118,421.92 is: 163,417.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,067.78 : 288,504.29 = 118,421.92 : x
  2. Step 2: Convert to fraction form
    209,067.78/288,504.29 = 118,421.92/x
  3. Step 3: Cross multiply
    209,067.78x = 288,504.29 × 118,421.92
  4. Step 4: Simplify right side
    209,067.78x = 34,165,232,606.72
  5. Step 5: Solve for x
    x = 34,165,232,606.72/209,067.78
  6. Step 6: Final answer
    x = 163,417.02

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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.