Home / 319,039.32-478,412.10-108,620.76

Finding the Fourth Proportional to 319,039.32, 478,412.10 and 108,620.76

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Solution

The fourth proportional to 319,039.32, 478,412.10 and 108,620.76 is: 162,881.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,039.32 : 478,412.10 = 108,620.76 : x
  2. Step 2: Convert to fraction form
    319,039.32/478,412.10 = 108,620.76/x
  3. Step 3: Cross multiply
    319,039.32x = 478,412.10 × 108,620.76
  4. Step 4: Simplify right side
    319,039.32x = 51,965,485,895.20
  5. Step 5: Solve for x
    x = 51,965,485,895.20/319,039.32
  6. Step 6: Final answer
    x = 162,881.13

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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.