Home / 290,411,732.42-400,765,971.98-158,252,320.24

Finding the Fourth Proportional to 290,411,732.42, 400,765,971.98 and 158,252,320.24

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Solution

The fourth proportional to 290,411,732.42, 400,765,971.98 and 158,252,320.24 is: 218,386,992.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,411,732.42 : 400,765,971.98 = 158,252,320.24 : x
  2. Step 2: Convert to fraction form
    290,411,732.42/400,765,971.98 = 158,252,320.24/x
  3. Step 3: Cross multiply
    290,411,732.42x = 400,765,971.98 × 158,252,320.24
  4. Step 4: Simplify right side
    290,411,732.42x = 63,422,144,938,783,528
  5. Step 5: Solve for x
    x = 63,422,144,938,783,528/290,411,732.42
  6. Step 6: Final answer
    x = 218,386,992.87

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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.