Home / 209,977.80-314,966.70-115,499.40

Finding the Fourth Proportional to 209,977.80, 314,966.70 and 115,499.40

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Solution

The fourth proportional to 209,977.80, 314,966.70 and 115,499.40 is: 173,249.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,977.80 : 314,966.70 = 115,499.40 : x
  2. Step 2: Convert to fraction form
    209,977.80/314,966.70 = 115,499.40/x
  3. Step 3: Cross multiply
    209,977.80x = 314,966.70 × 115,499.40
  4. Step 4: Simplify right side
    209,977.80x = 36,378,464,869.98
  5. Step 5: Solve for x
    x = 36,378,464,869.98/209,977.80
  6. Step 6: Final answer
    x = 173,249.10

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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.