Home / 420,274,208.12-630,346,660.44-140,160,043.81

Finding the Fourth Proportional to 420,274,208.12, 630,346,660.44 and 140,160,043.81

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Solution

The fourth proportional to 420,274,208.12, 630,346,660.44 and 140,160,043.81 is: 210,218,504.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,274,208.12 : 630,346,660.44 = 140,160,043.81 : x
  2. Step 2: Convert to fraction form
    420,274,208.12/630,346,660.44 = 140,160,043.81/x
  3. Step 3: Cross multiply
    420,274,208.12x = 630,346,660.44 × 140,160,043.81
  4. Step 4: Simplify right side
    420,274,208.12x = 88,349,415,543,019,920
  5. Step 5: Solve for x
    x = 88,349,415,543,019,920/420,274,208.12
  6. Step 6: Final answer
    x = 210,218,504.58

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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.