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Finding the Fourth Proportional to 611,080.66, 916,515.28 and 161,807.98

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Solution

The fourth proportional to 611,080.66, 916,515.28 and 161,807.98 is: 242,683.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,080.66 : 916,515.28 = 161,807.98 : x
  2. Step 2: Convert to fraction form
    611,080.66/916,515.28 = 161,807.98/x
  3. Step 3: Cross multiply
    611,080.66x = 916,515.28 × 161,807.98
  4. Step 4: Simplify right side
    611,080.66x = 148,299,485,270.29
  5. Step 5: Solve for x
    x = 148,299,485,270.29/611,080.66
  6. Step 6: Final answer
    x = 242,683.98

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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.