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Finding the Fourth Proportional to 478,544.81, 660,386.37 and 271,811.80

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Solution

The fourth proportional to 478,544.81, 660,386.37 and 271,811.80 is: 375,097.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,544.81 : 660,386.37 = 271,811.80 : x
  2. Step 2: Convert to fraction form
    478,544.81/660,386.37 = 271,811.80/x
  3. Step 3: Cross multiply
    478,544.81x = 660,386.37 × 271,811.80
  4. Step 4: Simplify right side
    478,544.81x = 179,500,808,241.00
  5. Step 5: Solve for x
    x = 179,500,808,241.00/478,544.81
  6. Step 6: Final answer
    x = 375,097.18

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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.