Home / 319,011.20-478,401.60-161,187.20

Finding the Fourth Proportional to 319,011.20, 478,401.60 and 161,187.20

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Solution

The fourth proportional to 319,011.20, 478,401.60 and 161,187.20 is: 241,722.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,011.20 : 478,401.60 = 161,187.20 : x
  2. Step 2: Convert to fraction form
    319,011.20/478,401.60 = 161,187.20/x
  3. Step 3: Cross multiply
    319,011.20x = 478,401.60 × 161,187.20
  4. Step 4: Simplify right side
    319,011.20x = 77,112,214,379.52
  5. Step 5: Solve for x
    x = 77,112,214,379.52/319,011.20
  6. Step 6: Final answer
    x = 241,722.59

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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.