Home / 212,865,210.40-319,297,815.60-91,932,858.40

Finding the Fourth Proportional to 212,865,210.40, 319,297,815.60 and 91,932,858.40

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Solution

The fourth proportional to 212,865,210.40, 319,297,815.60 and 91,932,858.40 is: 137,899,287.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,865,210.40 : 319,297,815.60 = 91,932,858.40 : x
  2. Step 2: Convert to fraction form
    212,865,210.40/319,297,815.60 = 91,932,858.40/x
  3. Step 3: Cross multiply
    212,865,210.40x = 319,297,815.60 × 91,932,858.40
  4. Step 4: Simplify right side
    212,865,210.40x = 29,353,960,868,984,116
  5. Step 5: Solve for x
    x = 29,353,960,868,984,116/212,865,210.40
  6. Step 6: Final answer
    x = 137,899,287.60

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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.