Home / 218,188,728.24-301,163,409-128,963,327.28

Finding the Fourth Proportional to 218,188,728.24, 301,163,409 and 128,963,327.28

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Solution

The fourth proportional to 218,188,728.24, 301,163,409 and 128,963,327.28 is: 178,006,607.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,188,728.24 : 301,163,409 = 128,963,327.28 : x
  2. Step 2: Convert to fraction form
    218,188,728.24/301,163,409 = 128,963,327.28/x
  3. Step 3: Cross multiply
    218,188,728.24x = 301,163,409 × 128,963,327.28
  4. Step 4: Simplify right side
    218,188,728.24x = 38,839,035,279,627,496
  5. Step 5: Solve for x
    x = 38,839,035,279,627,496/218,188,728.24
  6. Step 6: Final answer
    x = 178,006,607.37

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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.