Home / 209,933,622.40-314,900,433.60-128,891,804.80

Finding the Fourth Proportional to 209,933,622.40, 314,900,433.60 and 128,891,804.80

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Solution

The fourth proportional to 209,933,622.40, 314,900,433.60 and 128,891,804.80 is: 193,337,707.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,933,622.40 : 314,900,433.60 = 128,891,804.80 : x
  2. Step 2: Convert to fraction form
    209,933,622.40/314,900,433.60 = 128,891,804.80/x
  3. Step 3: Cross multiply
    209,933,622.40x = 314,900,433.60 × 128,891,804.80
  4. Step 4: Simplify right side
    209,933,622.40x = 40,588,085,219,006,560
  5. Step 5: Solve for x
    x = 40,588,085,219,006,560/209,933,622.40
  6. Step 6: Final answer
    x = 193,337,707.20

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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.