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Finding the Fourth Proportional to 486,666.19, 671,532.99 and 271,778.86

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Solution

The fourth proportional to 486,666.19, 671,532.99 and 271,778.86 is: 375,017.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,666.19 : 671,532.99 = 271,778.86 : x
  2. Step 2: Convert to fraction form
    486,666.19/671,532.99 = 271,778.86/x
  3. Step 3: Cross multiply
    486,666.19x = 671,532.99 × 271,778.86
  4. Step 4: Simplify right side
    486,666.19x = 182,508,470,474.59
  5. Step 5: Solve for x
    x = 182,508,470,474.59/486,666.19
  6. Step 6: Final answer
    x = 375,017.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.