Home / 380,431,312.12-570,467,076.90-147,371,178.52

Finding the Fourth Proportional to 380,431,312.12, 570,467,076.90 and 147,371,178.52

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Solution

The fourth proportional to 380,431,312.12, 570,467,076.90 and 147,371,178.52 is: 220,987,081.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,431,312.12 : 570,467,076.90 = 147,371,178.52 : x
  2. Step 2: Convert to fraction form
    380,431,312.12/570,467,076.90 = 147,371,178.52/x
  3. Step 3: Cross multiply
    380,431,312.12x = 570,467,076.90 × 147,371,178.52
  4. Step 4: Simplify right side
    380,431,312.12x = 84,070,405,429,612,464
  5. Step 5: Solve for x
    x = 84,070,405,429,612,464/380,431,312.12
  6. Step 6: Final answer
    x = 220,987,081.64

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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.