Home / 399,508,077.94-551,298,908.73-220,881,639.28

Finding the Fourth Proportional to 399,508,077.94, 551,298,908.73 and 220,881,639.28

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Solution

The fourth proportional to 399,508,077.94, 551,298,908.73 and 220,881,639.28 is: 304,804,366.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,508,077.94 : 551,298,908.73 = 220,881,639.28 : x
  2. Step 2: Convert to fraction form
    399,508,077.94/551,298,908.73 = 220,881,639.28/x
  3. Step 3: Cross multiply
    399,508,077.94x = 551,298,908.73 × 220,881,639.28
  4. Step 4: Simplify right side
    399,508,077.94x = 121,771,806,693,557,504
  5. Step 5: Solve for x
    x = 121,771,806,693,557,504/399,508,077.94
  6. Step 6: Final answer
    x = 304,804,366.71

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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.