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Finding the Fourth Proportional to 611,002.39, 916,548.54 and 161,720.23

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Solution

The fourth proportional to 611,002.39, 916,548.54 and 161,720.23 is: 242,592.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,002.39 : 916,548.54 = 161,720.23 : x
  2. Step 2: Convert to fraction form
    611,002.39/916,548.54 = 161,720.23/x
  3. Step 3: Cross multiply
    611,002.39x = 916,548.54 × 161,720.23
  4. Step 4: Simplify right side
    611,002.39x = 148,224,440,694.96
  5. Step 5: Solve for x
    x = 148,224,440,694.96/611,002.39
  6. Step 6: Final answer
    x = 242,592.24

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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.