Home / 291,767,039.45-402,637,310.68-157,805,105.21

Finding the Fourth Proportional to 291,767,039.45, 402,637,310.68 and 157,805,105.21

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Solution

The fourth proportional to 291,767,039.45, 402,637,310.68 and 157,805,105.21 is: 217,770,394.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,767,039.45 : 402,637,310.68 = 157,805,105.21 : x
  2. Step 2: Convert to fraction form
    291,767,039.45/402,637,310.68 = 157,805,105.21/x
  3. Step 3: Cross multiply
    291,767,039.45x = 402,637,310.68 × 157,805,105.21
  4. Step 4: Simplify right side
    291,767,039.45x = 63,538,223,173,328,864
  5. Step 5: Solve for x
    x = 63,538,223,173,328,864/291,767,039.45
  6. Step 6: Final answer
    x = 217,770,394.12

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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.