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Finding the Fourth Proportional to 211,210.64, 316,028.52 and 208,848.56

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Solution

The fourth proportional to 211,210.64, 316,028.52 and 208,848.56 is: 312,494.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,210.64 : 316,028.52 = 208,848.56 : x
  2. Step 2: Convert to fraction form
    211,210.64/316,028.52 = 208,848.56/x
  3. Step 3: Cross multiply
    211,210.64x = 316,028.52 × 208,848.56
  4. Step 4: Simplify right side
    211,210.64x = 66,002,101,320.93
  5. Step 5: Solve for x
    x = 66,002,101,320.93/211,210.64
  6. Step 6: Final answer
    x = 312,494.21

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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.