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Finding the Fourth Proportional to 613,724.62, 920,686.11 and 181,485.94

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Solution

The fourth proportional to 613,724.62, 920,686.11 and 181,485.94 is: 272,258.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,724.62 : 920,686.11 = 181,485.94 : x
  2. Step 2: Convert to fraction form
    613,724.62/920,686.11 = 181,485.94/x
  3. Step 3: Cross multiply
    613,724.62x = 920,686.11 × 181,485.94
  4. Step 4: Simplify right side
    613,724.62x = 167,091,584,118.29
  5. Step 5: Solve for x
    x = 167,091,584,118.29/613,724.62
  6. Step 6: Final answer
    x = 272,258.24

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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.