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Finding the Fourth Proportional to 403,243.60, 604,865.40 and 277,272.40

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Solution

The fourth proportional to 403,243.60, 604,865.40 and 277,272.40 is: 415,908.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,243.60 : 604,865.40 = 277,272.40 : x
  2. Step 2: Convert to fraction form
    403,243.60/604,865.40 = 277,272.40/x
  3. Step 3: Cross multiply
    403,243.60x = 604,865.40 × 277,272.40
  4. Step 4: Simplify right side
    403,243.60x = 167,712,481,134.96
  5. Step 5: Solve for x
    x = 167,712,481,134.96/403,243.60
  6. Step 6: Final answer
    x = 415,908.60

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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.