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Finding the Fourth Proportional to 351,773.40, 528,048.90 and 218,803.80

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Solution

The fourth proportional to 351,773.40, 528,048.90 and 218,803.80 is: 328,447.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,773.40 : 528,048.90 = 218,803.80 : x
  2. Step 2: Convert to fraction form
    351,773.40/528,048.90 = 218,803.80/x
  3. Step 3: Cross multiply
    351,773.40x = 528,048.90 × 218,803.80
  4. Step 4: Simplify right side
    351,773.40x = 115,539,105,905.82
  5. Step 5: Solve for x
    x = 115,539,105,905.82/351,773.40
  6. Step 6: Final answer
    x = 328,447.53

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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.