Home / 247,065.60-370,219.68-128,775.36

Finding the Fourth Proportional to 247,065.60, 370,219.68 and 128,775.36

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Solution

The fourth proportional to 247,065.60, 370,219.68 and 128,775.36 is: 192,965.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,065.60 : 370,219.68 = 128,775.36 : x
  2. Step 2: Convert to fraction form
    247,065.60/370,219.68 = 128,775.36/x
  3. Step 3: Cross multiply
    247,065.60x = 370,219.68 × 128,775.36
  4. Step 4: Simplify right side
    247,065.60x = 47,675,172,571.08
  5. Step 5: Solve for x
    x = 47,675,172,571.08/247,065.60
  6. Step 6: Final answer
    x = 192,965.64

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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.