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Finding the Fourth Proportional to 403,253.10, 604,879.65 and 278,837.10

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Solution

The fourth proportional to 403,253.10, 604,879.65 and 278,837.10 is: 418,255.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,253.10 : 604,879.65 = 278,837.10 : x
  2. Step 2: Convert to fraction form
    403,253.10/604,879.65 = 278,837.10/x
  3. Step 3: Cross multiply
    403,253.10x = 604,879.65 × 278,837.10
  4. Step 4: Simplify right side
    403,253.10x = 168,662,887,455.02
  5. Step 5: Solve for x
    x = 168,662,887,455.02/403,253.10
  6. Step 6: Final answer
    x = 418,255.65

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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.