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Finding the Fourth Proportional to 545,012.67, 817,642.02 and 165,967.30

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Solution

The fourth proportional to 545,012.67, 817,642.02 and 165,967.30 is: 248,988.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,012.67 : 817,642.02 = 165,967.30 : x
  2. Step 2: Convert to fraction form
    545,012.67/817,642.02 = 165,967.30/x
  3. Step 3: Cross multiply
    545,012.67x = 817,642.02 × 165,967.30
  4. Step 4: Simplify right side
    545,012.67x = 135,701,838,425.95
  5. Step 5: Solve for x
    x = 135,701,838,425.95/545,012.67
  6. Step 6: Final answer
    x = 248,988.41

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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.