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Finding the Fourth Proportional to 478,805,309.45, 718,238,307.34 and 202,405,010.51

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Solution

The fourth proportional to 478,805,309.45, 718,238,307.34 and 202,405,010.51 is: 303,620,342.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,805,309.45 : 718,238,307.34 = 202,405,010.51 : x
  2. Step 2: Convert to fraction form
    478,805,309.45/718,238,307.34 = 202,405,010.51/x
  3. Step 3: Cross multiply
    478,805,309.45x = 718,238,307.34 × 202,405,010.51
  4. Step 4: Simplify right side
    478,805,309.45x = 145,375,032,145,837,312
  5. Step 5: Solve for x
    x = 145,375,032,145,837,312/478,805,309.45
  6. Step 6: Final answer
    x = 303,620,342.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.