Home / 257,789,411.20-386,684,116.80-143,127,625.60

Finding the Fourth Proportional to 257,789,411.20, 386,684,116.80 and 143,127,625.60

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Solution

The fourth proportional to 257,789,411.20, 386,684,116.80 and 143,127,625.60 is: 214,691,438.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,789,411.20 : 386,684,116.80 = 143,127,625.60 : x
  2. Step 2: Convert to fraction form
    257,789,411.20/386,684,116.80 = 143,127,625.60/x
  3. Step 3: Cross multiply
    257,789,411.20x = 386,684,116.80 × 143,127,625.60
  4. Step 4: Simplify right side
    257,789,411.20x = 55,345,179,494,817,072
  5. Step 5: Solve for x
    x = 55,345,179,494,817,072/257,789,411.20
  6. Step 6: Final answer
    x = 214,691,438.40

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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.