Home / 399,339.25-551,110.61-218,068.09

Finding the Fourth Proportional to 399,339.25, 551,110.61 and 218,068.09

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Solution

The fourth proportional to 399,339.25, 551,110.61 and 218,068.09 is: 300,946.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,339.25 : 551,110.61 = 218,068.09 : x
  2. Step 2: Convert to fraction form
    399,339.25/551,110.61 = 218,068.09/x
  3. Step 3: Cross multiply
    399,339.25x = 551,110.61 × 218,068.09
  4. Step 4: Simplify right side
    399,339.25x = 120,179,637,268.83
  5. Step 5: Solve for x
    x = 120,179,637,268.83/399,339.25
  6. Step 6: Final answer
    x = 300,946.22

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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.