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Finding the Fourth Proportional to 465,699.72, 642,657.96 and 258,959.88

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Solution

The fourth proportional to 465,699.72, 642,657.96 and 258,959.88 is: 357,360.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,699.72 : 642,657.96 = 258,959.88 : x
  2. Step 2: Convert to fraction form
    465,699.72/642,657.96 = 258,959.88/x
  3. Step 3: Cross multiply
    465,699.72x = 642,657.96 × 258,959.88
  4. Step 4: Simplify right side
    465,699.72x = 166,422,628,202.65
  5. Step 5: Solve for x
    x = 166,422,628,202.65/465,699.72
  6. Step 6: Final answer
    x = 357,360.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.