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Finding the Fourth Proportional to 478,960.25, 718,440.38 and 194,805.40

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Solution

The fourth proportional to 478,960.25, 718,440.38 and 194,805.40 is: 292,208.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,960.25 : 718,440.38 = 194,805.40 : x
  2. Step 2: Convert to fraction form
    478,960.25/718,440.38 = 194,805.40/x
  3. Step 3: Cross multiply
    478,960.25x = 718,440.38 × 194,805.40
  4. Step 4: Simplify right side
    478,960.25x = 139,956,064,628.03
  5. Step 5: Solve for x
    x = 139,956,064,628.03/478,960.25
  6. Step 6: Final answer
    x = 292,208.10

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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.