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Finding the Fourth Proportional to 478,120.32, 717,422.40 and 193,877.28

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Solution

The fourth proportional to 478,120.32, 717,422.40 and 193,877.28 is: 290,914.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,120.32 : 717,422.40 = 193,877.28 : x
  2. Step 2: Convert to fraction form
    478,120.32/717,422.40 = 193,877.28/x
  3. Step 3: Cross multiply
    478,120.32x = 717,422.40 × 193,877.28
  4. Step 4: Simplify right side
    478,120.32x = 139,091,903,523.07
  5. Step 5: Solve for x
    x = 139,091,903,523.07/478,120.32
  6. Step 6: Final answer
    x = 290,914.02

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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.