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Finding the Fourth Proportional to 478,505.64, 717,860.52 and 238,748.48

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Solution

The fourth proportional to 478,505.64, 717,860.52 and 238,748.48 is: 358,173.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,505.64 : 717,860.52 = 238,748.48 : x
  2. Step 2: Convert to fraction form
    478,505.64/717,860.52 = 238,748.48/x
  3. Step 3: Cross multiply
    478,505.64x = 717,860.52 × 238,748.48
  4. Step 4: Simplify right side
    478,505.64x = 171,388,108,002.01
  5. Step 5: Solve for x
    x = 171,388,108,002.01/478,505.64
  6. Step 6: Final answer
    x = 358,173.64

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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.