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Finding the Fourth Proportional to 486,101.40, 727,985.70 and 236,491.80

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Solution

The fourth proportional to 486,101.40, 727,985.70 and 236,491.80 is: 354,170.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,101.40 : 727,985.70 = 236,491.80 : x
  2. Step 2: Convert to fraction form
    486,101.40/727,985.70 = 236,491.80/x
  3. Step 3: Cross multiply
    486,101.40x = 727,985.70 × 236,491.80
  4. Step 4: Simplify right side
    486,101.40x = 172,162,648,567.26
  5. Step 5: Solve for x
    x = 172,162,648,567.26/486,101.40
  6. Step 6: Final answer
    x = 354,170.24

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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.