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Finding the Fourth Proportional to 407,936.64, 611,812.56 and 155,127

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Solution

The fourth proportional to 407,936.64, 611,812.56 and 155,127 is: 232,655.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,936.64 : 611,812.56 = 155,127 : x
  2. Step 2: Convert to fraction form
    407,936.64/611,812.56 = 155,127/x
  3. Step 3: Cross multiply
    407,936.64x = 611,812.56 × 155,127
  4. Step 4: Simplify right side
    407,936.64x = 94,908,646,995.12
  5. Step 5: Solve for x
    x = 94,908,646,995.12/407,936.64
  6. Step 6: Final answer
    x = 232,655.36

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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.