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Finding the Fourth Proportional to 209,954,658.80, 314,837,509.80 and 80,519,250.80

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Solution

The fourth proportional to 209,954,658.80, 314,837,509.80 and 80,519,250.80 is: 120,742,643.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,954,658.80 : 314,837,509.80 = 80,519,250.80 : x
  2. Step 2: Convert to fraction form
    209,954,658.80/314,837,509.80 = 80,519,250.80/x
  3. Step 3: Cross multiply
    209,954,658.80x = 314,837,509.80 × 80,519,250.80
  4. Step 4: Simplify right side
    209,954,658.80x = 25,350,480,412,833,656
  5. Step 5: Solve for x
    x = 25,350,480,412,833,656/209,954,658.80
  6. Step 6: Final answer
    x = 120,742,643.00

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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.