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Finding the Fourth Proportional to 211,038.35, 316,573.92 and 61,281.11

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Solution

The fourth proportional to 211,038.35, 316,573.92 and 61,281.11 is: 91,926.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,038.35 : 316,573.92 = 61,281.11 : x
  2. Step 2: Convert to fraction form
    211,038.35/316,573.92 = 61,281.11/x
  3. Step 3: Cross multiply
    211,038.35x = 316,573.92 × 61,281.11
  4. Step 4: Simplify right side
    211,038.35x = 19,400,001,214.65
  5. Step 5: Solve for x
    x = 19,400,001,214.65/211,038.35
  6. Step 6: Final answer
    x = 91,926.43

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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.