Home / 397,055.32-548,001.66-289,979.80

Finding the Fourth Proportional to 397,055.32, 548,001.66 and 289,979.80

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Solution

The fourth proportional to 397,055.32, 548,001.66 and 289,979.80 is: 400,219.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,055.32 : 548,001.66 = 289,979.80 : x
  2. Step 2: Convert to fraction form
    397,055.32/548,001.66 = 289,979.80/x
  3. Step 3: Cross multiply
    397,055.32x = 548,001.66 × 289,979.80
  4. Step 4: Simplify right side
    397,055.32x = 158,909,411,766.47
  5. Step 5: Solve for x
    x = 158,909,411,766.47/397,055.32
  6. Step 6: Final answer
    x = 400,219.83

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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.