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Finding the Fourth Proportional to 518,014.19, 777,126.77 and 218,495.90

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Solution

The fourth proportional to 518,014.19, 777,126.77 and 218,495.90 is: 327,788.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,014.19 : 777,126.77 = 218,495.90 : x
  2. Step 2: Convert to fraction form
    518,014.19/777,126.77 = 218,495.90/x
  3. Step 3: Cross multiply
    518,014.19x = 777,126.77 × 218,495.90
  4. Step 4: Simplify right side
    518,014.19x = 169,799,008,047.13
  5. Step 5: Solve for x
    x = 169,799,008,047.13/518,014.19
  6. Step 6: Final answer
    x = 327,788.34

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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.