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Finding the Fourth Proportional to 319,062.85, 478,663.47 and 94,439.07

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Solution

The fourth proportional to 319,062.85, 478,663.47 and 94,439.07 is: 141,679.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,062.85 : 478,663.47 = 94,439.07 : x
  2. Step 2: Convert to fraction form
    319,062.85/478,663.47 = 94,439.07/x
  3. Step 3: Cross multiply
    319,062.85x = 478,663.47 × 94,439.07
  4. Step 4: Simplify right side
    319,062.85x = 45,204,532,949.77
  5. Step 5: Solve for x
    x = 45,204,532,949.77/319,062.85
  6. Step 6: Final answer
    x = 141,679.09

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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.