Home / 313,518,799.47-470,015,135.91-138,613,594.76

Finding the Fourth Proportional to 313,518,799.47, 470,015,135.91 and 138,613,594.76

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Solution

The fourth proportional to 313,518,799.47, 470,015,135.91 and 138,613,594.76 is: 207,804,086.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,518,799.47 : 470,015,135.91 = 138,613,594.76 : x
  2. Step 2: Convert to fraction form
    313,518,799.47/470,015,135.91 = 138,613,594.76/x
  3. Step 3: Cross multiply
    313,518,799.47x = 470,015,135.91 × 138,613,594.76
  4. Step 4: Simplify right side
    313,518,799.47x = 65,150,487,577,744,992
  5. Step 5: Solve for x
    x = 65,150,487,577,744,992/313,518,799.47
  6. Step 6: Final answer
    x = 207,804,086.03

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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.