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Finding the Fourth Proportional to 550,803.20, 760,045.92 and 309,035.36

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Solution

The fourth proportional to 550,803.20, 760,045.92 and 309,035.36 is: 426,433.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,803.20 : 760,045.92 = 309,035.36 : x
  2. Step 2: Convert to fraction form
    550,803.20/760,045.92 = 309,035.36/x
  3. Step 3: Cross multiply
    550,803.20x = 760,045.92 × 309,035.36
  4. Step 4: Simplify right side
    550,803.20x = 234,881,064,503.73
  5. Step 5: Solve for x
    x = 234,881,064,503.73/550,803.20
  6. Step 6: Final answer
    x = 426,433.73

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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.