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Finding the Fourth Proportional to 478,960.50, 718,440.75 and 194,805.65

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Solution

The fourth proportional to 478,960.50, 718,440.75 and 194,805.65 is: 292,208.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,960.50 : 718,440.75 = 194,805.65 : x
  2. Step 2: Convert to fraction form
    478,960.50/718,440.75 = 194,805.65/x
  3. Step 3: Cross multiply
    478,960.50x = 718,440.75 × 194,805.65
  4. Step 4: Simplify right side
    478,960.50x = 139,956,319,086.34
  5. Step 5: Solve for x
    x = 139,956,319,086.34/478,960.50
  6. Step 6: Final answer
    x = 292,208.48

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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.