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Finding the Fourth Proportional to 528,405.75, 729,199.98 and 302,056.11

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Solution

The fourth proportional to 528,405.75, 729,199.98 and 302,056.11 is: 416,837.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,405.75 : 729,199.98 = 302,056.11 : x
  2. Step 2: Convert to fraction form
    528,405.75/729,199.98 = 302,056.11/x
  3. Step 3: Cross multiply
    528,405.75x = 729,199.98 × 302,056.11
  4. Step 4: Simplify right side
    528,405.75x = 220,259,309,370.88
  5. Step 5: Solve for x
    x = 220,259,309,370.88/528,405.75
  6. Step 6: Final answer
    x = 416,837.46

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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.