Home / 212,859,321.60-319,288,982.40-161,840,985.60

Finding the Fourth Proportional to 212,859,321.60, 319,288,982.40 and 161,840,985.60

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Solution

The fourth proportional to 212,859,321.60, 319,288,982.40 and 161,840,985.60 is: 242,761,478.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,859,321.60 : 319,288,982.40 = 161,840,985.60 : x
  2. Step 2: Convert to fraction form
    212,859,321.60/319,288,982.40 = 161,840,985.60/x
  3. Step 3: Cross multiply
    212,859,321.60x = 319,288,982.40 × 161,840,985.60
  4. Step 4: Simplify right side
    212,859,321.60x = 51,674,043,602,837,048
  5. Step 5: Solve for x
    x = 51,674,043,602,837,048/212,859,321.60
  6. Step 6: Final answer
    x = 242,761,478.40

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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.