Home / 319,026.72-478,761-126,881.46

Finding the Fourth Proportional to 319,026.72, 478,761 and 126,881.46

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Solution

The fourth proportional to 319,026.72, 478,761 and 126,881.46 is: 190,410.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,026.72 : 478,761 = 126,881.46 : x
  2. Step 2: Convert to fraction form
    319,026.72/478,761 = 126,881.46/x
  3. Step 3: Cross multiply
    319,026.72x = 478,761 × 126,881.46
  4. Step 4: Simplify right side
    319,026.72x = 60,745,894,671.06
  5. Step 5: Solve for x
    x = 60,745,894,671.06/319,026.72
  6. Step 6: Final answer
    x = 190,410.05

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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.