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Finding the Fourth Proportional to 458,538.30, 687,807.45 and 248,586.30

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Solution

The fourth proportional to 458,538.30, 687,807.45 and 248,586.30 is: 372,879.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,538.30 : 687,807.45 = 248,586.30 : x
  2. Step 2: Convert to fraction form
    458,538.30/687,807.45 = 248,586.30/x
  3. Step 3: Cross multiply
    458,538.30x = 687,807.45 × 248,586.30
  4. Step 4: Simplify right side
    458,538.30x = 170,979,509,107.94
  5. Step 5: Solve for x
    x = 170,979,509,107.94/458,538.30
  6. Step 6: Final answer
    x = 372,879.45

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1.5x scale

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.