Home / 209,422,903.68-289,000,081.08-115,345,811.40

Finding the Fourth Proportional to 209,422,903.68, 289,000,081.08 and 115,345,811.40

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Solution

The fourth proportional to 209,422,903.68, 289,000,081.08 and 115,345,811.40 is: 159,175,277.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,422,903.68 : 289,000,081.08 = 115,345,811.40 : x
  2. Step 2: Convert to fraction form
    209,422,903.68/289,000,081.08 = 115,345,811.40/x
  3. Step 3: Cross multiply
    209,422,903.68x = 289,000,081.08 × 115,345,811.40
  4. Step 4: Simplify right side
    209,422,903.68x = 33,334,948,846,838,388
  5. Step 5: Solve for x
    x = 33,334,948,846,838,388/209,422,903.68
  6. Step 6: Final answer
    x = 159,175,277.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.