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Finding the Fourth Proportional to 289,390.48, 399,497.48 and 192,755.14

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Solution

The fourth proportional to 289,390.48, 399,497.48 and 192,755.14 is: 266,094.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,390.48 : 399,497.48 = 192,755.14 : x
  2. Step 2: Convert to fraction form
    289,390.48/399,497.48 = 192,755.14/x
  3. Step 3: Cross multiply
    289,390.48x = 399,497.48 × 192,755.14
  4. Step 4: Simplify right side
    289,390.48x = 77,005,191,723.27
  5. Step 5: Solve for x
    x = 77,005,191,723.27/289,390.48
  6. Step 6: Final answer
    x = 266,094.42

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1.5x scale

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.