Home / 430,094,838.12-645,145,990.78-138,961,992.02

Finding the Fourth Proportional to 430,094,838.12, 645,145,990.78 and 138,961,992.02

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Solution

The fourth proportional to 430,094,838.12, 645,145,990.78 and 138,961,992.02 is: 208,444,194.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,094,838.12 : 645,145,990.78 = 138,961,992.02 : x
  2. Step 2: Convert to fraction form
    430,094,838.12/645,145,990.78 = 138,961,992.02/x
  3. Step 3: Cross multiply
    430,094,838.12x = 645,145,990.78 × 138,961,992.02
  4. Step 4: Simplify right side
    430,094,838.12x = 89,650,772,022,505,360
  5. Step 5: Solve for x
    x = 89,650,772,022,505,360/430,094,838.12
  6. Step 6: Final answer
    x = 208,444,194.34

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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.