Home / 393,689,023.20-543,295,411.02-217,473,367.68

Finding the Fourth Proportional to 393,689,023.20, 543,295,411.02 and 217,473,367.68

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Solution

The fourth proportional to 393,689,023.20, 543,295,411.02 and 217,473,367.68 is: 300,115,765.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,689,023.20 : 543,295,411.02 = 217,473,367.68 : x
  2. Step 2: Convert to fraction form
    393,689,023.20/543,295,411.02 = 217,473,367.68/x
  3. Step 3: Cross multiply
    393,689,023.20x = 543,295,411.02 × 217,473,367.68
  4. Step 4: Simplify right side
    393,689,023.20x = 118,152,282,679,609,184
  5. Step 5: Solve for x
    x = 118,152,282,679,609,184/393,689,023.20
  6. Step 6: Final answer
    x = 300,115,765.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.