Home / 290,207,227.36-400,502,820-218,551,858.96

Finding the Fourth Proportional to 290,207,227.36, 400,502,820 and 218,551,858.96

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Solution

The fourth proportional to 290,207,227.36, 400,502,820 and 218,551,858.96 is: 301,614,252.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,207,227.36 : 400,502,820 = 218,551,858.96 : x
  2. Step 2: Convert to fraction form
    290,207,227.36/400,502,820 = 218,551,858.96/x
  3. Step 3: Cross multiply
    290,207,227.36x = 400,502,820 × 218,551,858.96
  4. Step 4: Simplify right side
    290,207,227.36x = 87,530,635,829,722,272
  5. Step 5: Solve for x
    x = 87,530,635,829,722,272/290,207,227.36
  6. Step 6: Final answer
    x = 301,614,252.08

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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.