Home / 385,101,117.89-531,438,997.92-208,888,900.48

Finding the Fourth Proportional to 385,101,117.89, 531,438,997.92 and 208,888,900.48

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Solution

The fourth proportional to 385,101,117.89, 531,438,997.92 and 208,888,900.48 is: 288,266,387.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,101,117.89 : 531,438,997.92 = 208,888,900.48 : x
  2. Step 2: Convert to fraction form
    385,101,117.89/531,438,997.92 = 208,888,900.48/x
  3. Step 3: Cross multiply
    385,101,117.89x = 531,438,997.92 × 208,888,900.48
  4. Step 4: Simplify right side
    385,101,117.89x = 111,011,707,947,582,768
  5. Step 5: Solve for x
    x = 111,011,707,947,582,768/385,101,117.89
  6. Step 6: Final answer
    x = 288,266,387.17

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.