Home / 211,339,689.24-317,085,046.38-128,509,962.42

Finding the Fourth Proportional to 211,339,689.24, 317,085,046.38 and 128,509,962.42

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Solution

The fourth proportional to 211,339,689.24, 317,085,046.38 and 128,509,962.42 is: 192,810,860.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,339,689.24 : 317,085,046.38 = 128,509,962.42 : x
  2. Step 2: Convert to fraction form
    211,339,689.24/317,085,046.38 = 128,509,962.42/x
  3. Step 3: Cross multiply
    211,339,689.24x = 317,085,046.38 × 128,509,962.42
  4. Step 4: Simplify right side
    211,339,689.24x = 40,748,587,394,237,760
  5. Step 5: Solve for x
    x = 40,748,587,394,237,760/211,339,689.24
  6. Step 6: Final answer
    x = 192,810,860.76

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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.