Home / 290,121,510.60-400,363,929.09-157,960,991.25

Finding the Fourth Proportional to 290,121,510.60, 400,363,929.09 and 157,960,991.25

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Solution

The fourth proportional to 290,121,510.60, 400,363,929.09 and 157,960,991.25 is: 217,984,123.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,121,510.60 : 400,363,929.09 = 157,960,991.25 : x
  2. Step 2: Convert to fraction form
    290,121,510.60/400,363,929.09 = 157,960,991.25/x
  3. Step 3: Cross multiply
    290,121,510.60x = 400,363,929.09 × 157,960,991.25
  4. Step 4: Simplify right side
    290,121,510.60x = 63,241,883,099,801,104
  5. Step 5: Solve for x
    x = 63,241,883,099,801,104/290,121,510.60
  6. Step 6: Final answer
    x = 217,984,123.17

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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.