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Finding the Fourth Proportional to 403,959.60, 605,939.40 and 304,815.60

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Solution

The fourth proportional to 403,959.60, 605,939.40 and 304,815.60 is: 457,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,959.60 : 605,939.40 = 304,815.60 : x
  2. Step 2: Convert to fraction form
    403,959.60/605,939.40 = 304,815.60/x
  3. Step 3: Cross multiply
    403,959.60x = 605,939.40 × 304,815.60
  4. Step 4: Simplify right side
    403,959.60x = 184,699,781,774.64
  5. Step 5: Solve for x
    x = 184,699,781,774.64/403,959.60
  6. Step 6: Final answer
    x = 457,223.40

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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.