Home / 209,058.91-288,520.58-118,418.69

Finding the Fourth Proportional to 209,058.91, 288,520.58 and 118,418.69

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Solution

The fourth proportional to 209,058.91, 288,520.58 and 118,418.69 is: 163,428.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,058.91 : 288,520.58 = 118,418.69 : x
  2. Step 2: Convert to fraction form
    209,058.91/288,520.58 = 118,418.69/x
  3. Step 3: Cross multiply
    209,058.91x = 288,520.58 × 118,418.69
  4. Step 4: Simplify right side
    209,058.91x = 34,166,230,138.99
  5. Step 5: Solve for x
    x = 34,166,230,138.99/209,058.91
  6. Step 6: Final answer
    x = 163,428.72

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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.