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Finding the Fourth Proportional to 319,059.70, 478,503.15 and 94,419.70

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Solution

The fourth proportional to 319,059.70, 478,503.15 and 94,419.70 is: 141,603.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,059.70 : 478,503.15 = 94,419.70 : x
  2. Step 2: Convert to fraction form
    319,059.70/478,503.15 = 94,419.70/x
  3. Step 3: Cross multiply
    319,059.70x = 478,503.15 × 94,419.70
  4. Step 4: Simplify right side
    319,059.70x = 45,180,123,872.06
  5. Step 5: Solve for x
    x = 45,180,123,872.06/319,059.70
  6. Step 6: Final answer
    x = 141,603.98

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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.