Home / 399,359.46-551,138.38-218,088.25

Finding the Fourth Proportional to 399,359.46, 551,138.38 and 218,088.25

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Solution

The fourth proportional to 399,359.46, 551,138.38 and 218,088.25 is: 300,973.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,359.46 : 551,138.38 = 218,088.25 : x
  2. Step 2: Convert to fraction form
    399,359.46/551,138.38 = 218,088.25/x
  3. Step 3: Cross multiply
    399,359.46x = 551,138.38 × 218,088.25
  4. Step 4: Simplify right side
    399,359.46x = 120,196,802,878.97
  5. Step 5: Solve for x
    x = 120,196,802,878.97/399,359.46
  6. Step 6: Final answer
    x = 300,973.97

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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.