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Finding the Fourth Proportional to 486,670.70, 671,539.16 and 271,783.36

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Solution

The fourth proportional to 486,670.70, 671,539.16 and 271,783.36 is: 375,023.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,670.70 : 671,539.16 = 271,783.36 : x
  2. Step 2: Convert to fraction form
    486,670.70/671,539.16 = 271,783.36/x
  3. Step 3: Cross multiply
    486,670.70x = 671,539.16 × 271,783.36
  4. Step 4: Simplify right side
    486,670.70x = 182,513,169,276.38
  5. Step 5: Solve for x
    x = 182,513,169,276.38/486,670.70
  6. Step 6: Final answer
    x = 375,023.95

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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.