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Finding the Fourth Proportional to 545,147.71, 817,889.07 and 279,094.99

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Solution

The fourth proportional to 545,147.71, 817,889.07 and 279,094.99 is: 418,728.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,147.71 : 817,889.07 = 279,094.99 : x
  2. Step 2: Convert to fraction form
    545,147.71/817,889.07 = 279,094.99/x
  3. Step 3: Cross multiply
    545,147.71x = 817,889.07 × 279,094.99
  4. Step 4: Simplify right side
    545,147.71x = 228,268,741,812.76
  5. Step 5: Solve for x
    x = 228,268,741,812.76/545,147.71
  6. Step 6: Final answer
    x = 418,728.24

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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.