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Finding the Fourth Proportional to 287,196,388.80, 430,797,040.80 and 95,720,164.80

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Solution

The fourth proportional to 287,196,388.80, 430,797,040.80 and 95,720,164.80 is: 143,581,066.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,196,388.80 : 430,797,040.80 = 95,720,164.80 : x
  2. Step 2: Convert to fraction form
    287,196,388.80/430,797,040.80 = 95,720,164.80/x
  3. Step 3: Cross multiply
    287,196,388.80x = 430,797,040.80 × 95,720,164.80
  4. Step 4: Simplify right side
    287,196,388.80x = 41,235,963,740,728,320
  5. Step 5: Solve for x
    x = 41,235,963,740,728,320/287,196,388.80
  6. Step 6: Final answer
    x = 143,581,066.30

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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.