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Finding the Fourth Proportional to 211,206.66, 316,804.51 and 70,965.28

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Solution

The fourth proportional to 211,206.66, 316,804.51 and 70,965.28 is: 106,446.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,206.66 : 316,804.51 = 70,965.28 : x
  2. Step 2: Convert to fraction form
    211,206.66/316,804.51 = 70,965.28/x
  3. Step 3: Cross multiply
    211,206.66x = 316,804.51 × 70,965.28
  4. Step 4: Simplify right side
    211,206.66x = 22,482,120,757.41
  5. Step 5: Solve for x
    x = 22,482,120,757.41/211,206.66
  6. Step 6: Final answer
    x = 106,446.08

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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.