Home / 257,890,687.20-386,836,030.80-229,673,138.40

Finding the Fourth Proportional to 257,890,687.20, 386,836,030.80 and 229,673,138.40

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Solution

The fourth proportional to 257,890,687.20, 386,836,030.80 and 229,673,138.40 is: 344,509,707.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,890,687.20 : 386,836,030.80 = 229,673,138.40 : x
  2. Step 2: Convert to fraction form
    257,890,687.20/386,836,030.80 = 229,673,138.40/x
  3. Step 3: Cross multiply
    257,890,687.20x = 386,836,030.80 × 229,673,138.40
  4. Step 4: Simplify right side
    257,890,687.20x = 88,845,845,240,035,072
  5. Step 5: Solve for x
    x = 88,845,845,240,035,072/257,890,687.20
  6. Step 6: Final answer
    x = 344,509,707.60

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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.