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Finding the Fourth Proportional to 478,571.21, 660,397.18 and 263,711.27

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Solution

The fourth proportional to 478,571.21, 660,397.18 and 263,711.27 is: 363,904.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,571.21 : 660,397.18 = 263,711.27 : x
  2. Step 2: Convert to fraction form
    478,571.21/660,397.18 = 263,711.27/x
  3. Step 3: Cross multiply
    478,571.21x = 660,397.18 × 263,711.27
  4. Step 4: Simplify right side
    478,571.21x = 174,154,182,384.18
  5. Step 5: Solve for x
    x = 174,154,182,384.18/478,571.21
  6. Step 6: Final answer
    x = 363,904.43

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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.