Home / 209,992.20-314,988.30-139,133.40

Finding the Fourth Proportional to 209,992.20, 314,988.30 and 139,133.40

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Solution

The fourth proportional to 209,992.20, 314,988.30 and 139,133.40 is: 208,700.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,992.20 : 314,988.30 = 139,133.40 : x
  2. Step 2: Convert to fraction form
    209,992.20/314,988.30 = 139,133.40/x
  3. Step 3: Cross multiply
    209,992.20x = 314,988.30 × 139,133.40
  4. Step 4: Simplify right side
    209,992.20x = 43,825,393,139.22
  5. Step 5: Solve for x
    x = 43,825,393,139.22/209,992.20
  6. Step 6: Final answer
    x = 208,700.10

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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.