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Finding the Fourth Proportional to 617,606.17, 926,483.97 and 218,165.20

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Solution

The fourth proportional to 617,606.17, 926,483.97 and 218,165.20 is: 327,274.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,606.17 : 926,483.97 = 218,165.20 : x
  2. Step 2: Convert to fraction form
    617,606.17/926,483.97 = 218,165.20/x
  3. Step 3: Cross multiply
    617,606.17x = 926,483.97 × 218,165.20
  4. Step 4: Simplify right side
    617,606.17x = 202,126,559,113.75
  5. Step 5: Solve for x
    x = 202,126,559,113.75/617,606.17
  6. Step 6: Final answer
    x = 327,274.19

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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.