Home / 368,983,988.73-553,858,947.45-213,840,915.75

Finding the Fourth Proportional to 368,983,988.73, 553,858,947.45 and 213,840,915.75

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Solution

The fourth proportional to 368,983,988.73, 553,858,947.45 and 213,840,915.75 is: 320,983,316.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,983,988.73 : 553,858,947.45 = 213,840,915.75 : x
  2. Step 2: Convert to fraction form
    368,983,988.73/553,858,947.45 = 213,840,915.75/x
  3. Step 3: Cross multiply
    368,983,988.73x = 553,858,947.45 × 213,840,915.75
  4. Step 4: Simplify right side
    368,983,988.73x = 118,437,704,519,039,136
  5. Step 5: Solve for x
    x = 118,437,704,519,039,136/368,983,988.73
  6. Step 6: Final answer
    x = 320,983,316.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.