Home / 208,397,353.43-312,643,645.19-72,082,621.91

Finding the Fourth Proportional to 208,397,353.43, 312,643,645.19 and 72,082,621.91

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Solution

The fourth proportional to 208,397,353.43, 312,643,645.19 and 72,082,621.91 is: 108,140,402.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,397,353.43 : 312,643,645.19 = 72,082,621.91 : x
  2. Step 2: Convert to fraction form
    208,397,353.43/312,643,645.19 = 72,082,621.91/x
  3. Step 3: Cross multiply
    208,397,353.43x = 312,643,645.19 × 72,082,621.91
  4. Step 4: Simplify right side
    208,397,353.43x = 22,536,173,668,794,960
  5. Step 5: Solve for x
    x = 22,536,173,668,794,960/208,397,353.43
  6. Step 6: Final answer
    x = 108,140,402.45

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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.