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Finding the Fourth Proportional to 478,820.40, 718,230.48 and 123,870.24

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Solution

The fourth proportional to 478,820.40, 718,230.48 and 123,870.24 is: 185,805.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,820.40 : 718,230.48 = 123,870.24 : x
  2. Step 2: Convert to fraction form
    478,820.40/718,230.48 = 123,870.24/x
  3. Step 3: Cross multiply
    478,820.40x = 718,230.48 × 123,870.24
  4. Step 4: Simplify right side
    478,820.40x = 88,967,381,932.92
  5. Step 5: Solve for x
    x = 88,967,381,932.92/478,820.40
  6. Step 6: Final answer
    x = 185,805.33

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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.