Home / 287,379,234.40-431,068,851.60-196,679,970.40

Finding the Fourth Proportional to 287,379,234.40, 431,068,851.60 and 196,679,970.40

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Solution

The fourth proportional to 287,379,234.40, 431,068,851.60 and 196,679,970.40 is: 295,019,955.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,379,234.40 : 431,068,851.60 = 196,679,970.40 : x
  2. Step 2: Convert to fraction form
    287,379,234.40/431,068,851.60 = 196,679,970.40/x
  3. Step 3: Cross multiply
    287,379,234.40x = 431,068,851.60 × 196,679,970.40
  4. Step 4: Simplify right side
    287,379,234.40x = 84,782,608,973,050,000
  5. Step 5: Solve for x
    x = 84,782,608,973,050,000/287,379,234.40
  6. Step 6: Final answer
    x = 295,019,955.60

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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.