Home / 287,019,921.60-396,209,925.51-192,988,571.70

Finding the Fourth Proportional to 287,019,921.60, 396,209,925.51 and 192,988,571.70

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Solution

The fourth proportional to 287,019,921.60, 396,209,925.51 and 192,988,571.70 is: 266,406,551.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,019,921.60 : 396,209,925.51 = 192,988,571.70 : x
  2. Step 2: Convert to fraction form
    287,019,921.60/396,209,925.51 = 192,988,571.70/x
  3. Step 3: Cross multiply
    287,019,921.60x = 396,209,925.51 × 192,988,571.70
  4. Step 4: Simplify right side
    287,019,921.60x = 76,463,987,617,538,288
  5. Step 5: Solve for x
    x = 76,463,987,617,538,288/287,019,921.60
  6. Step 6: Final answer
    x = 266,406,551.82

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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.