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Finding the Fourth Proportional to 478,658, 718,021.56 and 183,170

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Solution

The fourth proportional to 478,658, 718,021.56 and 183,170 is: 274,768.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,658 : 718,021.56 = 183,170 : x
  2. Step 2: Convert to fraction form
    478,658/718,021.56 = 183,170/x
  3. Step 3: Cross multiply
    478,658x = 718,021.56 × 183,170
  4. Step 4: Simplify right side
    478,658x = 131,520,009,145.20
  5. Step 5: Solve for x
    x = 131,520,009,145.20/478,658
  6. Step 6: Final answer
    x = 274,768.23

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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.