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Finding the Fourth Proportional to 636,868.90, 955,313.10 and 163,543.78

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Solution

The fourth proportional to 636,868.90, 955,313.10 and 163,543.78 is: 245,318.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,868.90 : 955,313.10 = 163,543.78 : x
  2. Step 2: Convert to fraction form
    636,868.90/955,313.10 = 163,543.78/x
  3. Step 3: Cross multiply
    636,868.90x = 955,313.10 × 163,543.78
  4. Step 4: Simplify right side
    636,868.90x = 156,235,515,457.52
  5. Step 5: Solve for x
    x = 156,235,515,457.52/636,868.90
  6. Step 6: Final answer
    x = 245,318.17

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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.