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Finding the Fourth Proportional to 478,736.75, 718,005.62 and 141,698.34

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Solution

The fourth proportional to 478,736.75, 718,005.62 and 141,698.34 is: 212,518.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,736.75 : 718,005.62 = 141,698.34 : x
  2. Step 2: Convert to fraction form
    478,736.75/718,005.62 = 141,698.34/x
  3. Step 3: Cross multiply
    478,736.75x = 718,005.62 × 141,698.34
  4. Step 4: Simplify right side
    478,736.75x = 101,740,203,756.18
  5. Step 5: Solve for x
    x = 101,740,203,756.18/478,736.75
  6. Step 6: Final answer
    x = 212,518.06

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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.