Home / 238,359,905.20-357,539,857.80-212,661,780.40

Finding the Fourth Proportional to 238,359,905.20, 357,539,857.80 and 212,661,780.40

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Solution

The fourth proportional to 238,359,905.20, 357,539,857.80 and 212,661,780.40 is: 318,992,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,359,905.20 : 357,539,857.80 = 212,661,780.40 : x
  2. Step 2: Convert to fraction form
    238,359,905.20/357,539,857.80 = 212,661,780.40/x
  3. Step 3: Cross multiply
    238,359,905.20x = 357,539,857.80 × 212,661,780.40
  4. Step 4: Simplify right side
    238,359,905.20x = 76,035,062,723,710,832
  5. Step 5: Solve for x
    x = 76,035,062,723,710,832/238,359,905.20
  6. Step 6: Final answer
    x = 318,992,670.60

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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.