Home / 209,721.40-313,967.70-185,145.40

Finding the Fourth Proportional to 209,721.40, 313,967.70 and 185,145.40

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Solution

The fourth proportional to 209,721.40, 313,967.70 and 185,145.40 is: 277,175.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,721.40 : 313,967.70 = 185,145.40 : x
  2. Step 2: Convert to fraction form
    209,721.40/313,967.70 = 185,145.40/x
  3. Step 3: Cross multiply
    209,721.40x = 313,967.70 × 185,145.40
  4. Step 4: Simplify right side
    209,721.40x = 58,129,675,403.58
  5. Step 5: Solve for x
    x = 58,129,675,403.58/209,721.40
  6. Step 6: Final answer
    x = 277,175.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.