Home / 209,021.78-288,407.72-127,295.25

Finding the Fourth Proportional to 209,021.78, 288,407.72 and 127,295.25

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Solution

The fourth proportional to 209,021.78, 288,407.72 and 127,295.25 is: 175,641.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,021.78 : 288,407.72 = 127,295.25 : x
  2. Step 2: Convert to fraction form
    209,021.78/288,407.72 = 127,295.25/x
  3. Step 3: Cross multiply
    209,021.78x = 288,407.72 × 127,295.25
  4. Step 4: Simplify right side
    209,021.78x = 36,712,932,182.85
  5. Step 5: Solve for x
    x = 36,712,932,182.85/209,021.78
  6. Step 6: Final answer
    x = 175,641.66

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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.