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Finding the Fourth Proportional to 319,577.40, 479,330.70 and 114,403.86

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Solution

The fourth proportional to 319,577.40, 479,330.70 and 114,403.86 is: 171,593.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,577.40 : 479,330.70 = 114,403.86 : x
  2. Step 2: Convert to fraction form
    319,577.40/479,330.70 = 114,403.86/x
  3. Step 3: Cross multiply
    319,577.40x = 479,330.70 × 114,403.86
  4. Step 4: Simplify right side
    319,577.40x = 54,837,282,296.50
  5. Step 5: Solve for x
    x = 54,837,282,296.50/319,577.40
  6. Step 6: Final answer
    x = 171,593.12

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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.