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Finding the Fourth Proportional to 319,445.55, 478,761.30 and 169,757.55

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Solution

The fourth proportional to 319,445.55, 478,761.30 and 169,757.55 is: 254,420.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,445.55 : 478,761.30 = 169,757.55 : x
  2. Step 2: Convert to fraction form
    319,445.55/478,761.30 = 169,757.55/x
  3. Step 3: Cross multiply
    319,445.55x = 478,761.30 × 169,757.55
  4. Step 4: Simplify right side
    319,445.55x = 81,273,345,322.82
  5. Step 5: Solve for x
    x = 81,273,345,322.82/319,445.55
  6. Step 6: Final answer
    x = 254,420.03

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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.