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Finding the Fourth Proportional to 211,007.01, 316,510.52 and 70,765.23

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Solution

The fourth proportional to 211,007.01, 316,510.52 and 70,765.23 is: 106,147.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,007.01 : 316,510.52 = 70,765.23 : x
  2. Step 2: Convert to fraction form
    211,007.01/316,510.52 = 70,765.23/x
  3. Step 3: Cross multiply
    211,007.01x = 316,510.52 × 70,765.23
  4. Step 4: Simplify right side
    211,007.01x = 22,397,939,391.39
  5. Step 5: Solve for x
    x = 22,397,939,391.39/211,007.01
  6. Step 6: Final answer
    x = 106,147.85

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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.