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Finding the Fourth Proportional to 199,499.88, 298,999.98 and 99,688.08

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Solution

The fourth proportional to 199,499.88, 298,999.98 and 99,688.08 is: 149,407.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,499.88 : 298,999.98 = 99,688.08 : x
  2. Step 2: Convert to fraction form
    199,499.88/298,999.98 = 99,688.08/x
  3. Step 3: Cross multiply
    199,499.88x = 298,999.98 × 99,688.08
  4. Step 4: Simplify right side
    199,499.88x = 29,806,733,926.24
  5. Step 5: Solve for x
    x = 29,806,733,926.24/199,499.88
  6. Step 6: Final answer
    x = 149,407.28

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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.