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Finding the Fourth Proportional to 485,467.74, 728,084.88 and 248,688.54

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Solution

The fourth proportional to 485,467.74, 728,084.88 and 248,688.54 is: 372,973.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,467.74 : 728,084.88 = 248,688.54 : x
  2. Step 2: Convert to fraction form
    485,467.74/728,084.88 = 248,688.54/x
  3. Step 3: Cross multiply
    485,467.74x = 728,084.88 × 248,688.54
  4. Step 4: Simplify right side
    485,467.74x = 181,066,365,803.28
  5. Step 5: Solve for x
    x = 181,066,365,803.28/485,467.74
  6. Step 6: Final answer
    x = 372,973.01

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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.