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Finding the Fourth Proportional to 319,142.75, 478,715.67 and 94,507.43

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Solution

The fourth proportional to 319,142.75, 478,715.67 and 94,507.43 is: 141,761.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,142.75 : 478,715.67 = 94,507.43 : x
  2. Step 2: Convert to fraction form
    319,142.75/478,715.67 = 94,507.43/x
  3. Step 3: Cross multiply
    319,142.75x = 478,715.67 × 94,507.43
  4. Step 4: Simplify right side
    319,142.75x = 45,242,185,278.85
  5. Step 5: Solve for x
    x = 45,242,185,278.85/319,142.75
  6. Step 6: Final answer
    x = 141,761.60

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1.5x scale

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.