Home / 211,298,568.21-291,548,359.12-121,988,964.77

Finding the Fourth Proportional to 211,298,568.21, 291,548,359.12 and 121,988,964.77

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Solution

The fourth proportional to 211,298,568.21, 291,548,359.12 and 121,988,964.77 is: 168,319,562.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,298,568.21 : 291,548,359.12 = 121,988,964.77 : x
  2. Step 2: Convert to fraction form
    211,298,568.21/291,548,359.12 = 121,988,964.77/x
  3. Step 3: Cross multiply
    211,298,568.21x = 291,548,359.12 × 121,988,964.77
  4. Step 4: Simplify right side
    211,298,568.21x = 35,565,682,509,440,988
  5. Step 5: Solve for x
    x = 35,565,682,509,440,988/211,298,568.21
  6. Step 6: Final answer
    x = 168,319,562.27

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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.