Home / 209,933,629.40-314,900,444.10-128,891,811.80

Finding the Fourth Proportional to 209,933,629.40, 314,900,444.10 and 128,891,811.80

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Solution

The fourth proportional to 209,933,629.40, 314,900,444.10 and 128,891,811.80 is: 193,337,717.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,933,629.40 : 314,900,444.10 = 128,891,811.80 : x
  2. Step 2: Convert to fraction form
    209,933,629.40/314,900,444.10 = 128,891,811.80/x
  3. Step 3: Cross multiply
    209,933,629.40x = 314,900,444.10 × 128,891,811.80
  4. Step 4: Simplify right side
    209,933,629.40x = 40,588,088,776,673,624
  5. Step 5: Solve for x
    x = 40,588,088,776,673,624/209,933,629.40
  6. Step 6: Final answer
    x = 193,337,717.70

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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.