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Finding the Fourth Proportional to 318,857.77, 440,023.72 and 175,617.81

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Solution

The fourth proportional to 318,857.77, 440,023.72 and 175,617.81 is: 242,352.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,857.77 : 440,023.72 = 175,617.81 : x
  2. Step 2: Convert to fraction form
    318,857.77/440,023.72 = 175,617.81/x
  3. Step 3: Cross multiply
    318,857.77x = 440,023.72 × 175,617.81
  4. Step 4: Simplify right side
    318,857.77x = 77,276,000,831.98
  5. Step 5: Solve for x
    x = 77,276,000,831.98/318,857.77
  6. Step 6: Final answer
    x = 242,352.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.