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Finding the Fourth Proportional to 386,354.46, 533,477.43 and 259,139.10

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Solution

The fourth proportional to 386,354.46, 533,477.43 and 259,139.10 is: 357,818.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,354.46 : 533,477.43 = 259,139.10 : x
  2. Step 2: Convert to fraction form
    386,354.46/533,477.43 = 259,139.10/x
  3. Step 3: Cross multiply
    386,354.46x = 533,477.43 × 259,139.10
  4. Step 4: Simplify right side
    386,354.46x = 138,244,861,080.51
  5. Step 5: Solve for x
    x = 138,244,861,080.51/386,354.46
  6. Step 6: Final answer
    x = 357,818.73

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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.