Home / 518,018.12-777,110.21-218,542.81

Finding the Fourth Proportional to 518,018.12, 777,110.21 and 218,542.81

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Solution

The fourth proportional to 518,018.12, 777,110.21 and 218,542.81 is: 327,849.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,018.12 : 777,110.21 = 218,542.81 : x
  2. Step 2: Convert to fraction form
    518,018.12/777,110.21 = 218,542.81/x
  3. Step 3: Cross multiply
    518,018.12x = 777,110.21 × 218,542.81
  4. Step 4: Simplify right side
    518,018.12x = 169,831,849,059.38
  5. Step 5: Solve for x
    x = 169,831,849,059.38/518,018.12
  6. Step 6: Final answer
    x = 327,849.25

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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.