Home / 319,054.32-478,434.60-108,635.76

Finding the Fourth Proportional to 319,054.32, 478,434.60 and 108,635.76

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Solution

The fourth proportional to 319,054.32, 478,434.60 and 108,635.76 is: 162,903.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,054.32 : 478,434.60 = 108,635.76 : x
  2. Step 2: Convert to fraction form
    319,054.32/478,434.60 = 108,635.76/x
  3. Step 3: Cross multiply
    319,054.32x = 478,434.60 × 108,635.76
  4. Step 4: Simplify right side
    319,054.32x = 51,975,106,381.30
  5. Step 5: Solve for x
    x = 51,975,106,381.30/319,054.32
  6. Step 6: Final answer
    x = 162,903.63

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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.