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Finding the Fourth Proportional to 272,937.79, 409,350.21 and 73,210.69

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Solution

The fourth proportional to 272,937.79, 409,350.21 and 73,210.69 is: 109,800.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,937.79 : 409,350.21 = 73,210.69 : x
  2. Step 2: Convert to fraction form
    272,937.79/409,350.21 = 73,210.69/x
  3. Step 3: Cross multiply
    272,937.79x = 409,350.21 × 73,210.69
  4. Step 4: Simplify right side
    272,937.79x = 29,968,811,325.74
  5. Step 5: Solve for x
    x = 29,968,811,325.74/272,937.79
  6. Step 6: Final answer
    x = 109,800.89

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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.