Home / 212,865,209.40-319,297,814.10-91,932,857.40

Finding the Fourth Proportional to 212,865,209.40, 319,297,814.10 and 91,932,857.40

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Solution

The fourth proportional to 212,865,209.40, 319,297,814.10 and 91,932,857.40 is: 137,899,286.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,865,209.40 : 319,297,814.10 = 91,932,857.40 : x
  2. Step 2: Convert to fraction form
    212,865,209.40/319,297,814.10 = 91,932,857.40/x
  3. Step 3: Cross multiply
    212,865,209.40x = 319,297,814.10 × 91,932,857.40
  4. Step 4: Simplify right side
    212,865,209.40x = 29,353,960,411,787,012
  5. Step 5: Solve for x
    x = 29,353,960,411,787,012/212,865,209.40
  6. Step 6: Final answer
    x = 137,899,286.10

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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.