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Finding the Fourth Proportional to 417,803.04, 626,906.48 and 259,990.56

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Solution

The fourth proportional to 417,803.04, 626,906.48 and 259,990.56 is: 390,111.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,803.04 : 626,906.48 = 259,990.56 : x
  2. Step 2: Convert to fraction form
    417,803.04/626,906.48 = 259,990.56/x
  3. Step 3: Cross multiply
    417,803.04x = 626,906.48 × 259,990.56
  4. Step 4: Simplify right side
    417,803.04x = 162,989,766,802.83
  5. Step 5: Solve for x
    x = 162,989,766,802.83/417,803.04
  6. Step 6: Final answer
    x = 390,111.49

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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.