Home / 287,379,218.40-431,068,827.60-196,679,954.40

Finding the Fourth Proportional to 287,379,218.40, 431,068,827.60 and 196,679,954.40

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Solution

The fourth proportional to 287,379,218.40, 431,068,827.60 and 196,679,954.40 is: 295,019,931.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,379,218.40 : 431,068,827.60 = 196,679,954.40 : x
  2. Step 2: Convert to fraction form
    287,379,218.40/431,068,827.60 = 196,679,954.40/x
  3. Step 3: Cross multiply
    287,379,218.40x = 431,068,827.60 × 196,679,954.40
  4. Step 4: Simplify right side
    287,379,218.40x = 84,782,597,355,629,472
  5. Step 5: Solve for x
    x = 84,782,597,355,629,472/287,379,218.40
  6. Step 6: Final answer
    x = 295,019,931.60

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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.