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Finding the Fourth Proportional to 478,357.44, 717,533.28 and 145,933.44

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Solution

The fourth proportional to 478,357.44, 717,533.28 and 145,933.44 is: 218,899.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,357.44 : 717,533.28 = 145,933.44 : x
  2. Step 2: Convert to fraction form
    478,357.44/717,533.28 = 145,933.44/x
  3. Step 3: Cross multiply
    478,357.44x = 717,533.28 × 145,933.44
  4. Step 4: Simplify right side
    478,357.44x = 104,712,099,864.88
  5. Step 5: Solve for x
    x = 104,712,099,864.88/478,357.44
  6. Step 6: Final answer
    x = 218,899.28

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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.