Home / 402,135,308.40-603,202,962.60-143,358,970.80

Finding the Fourth Proportional to 402,135,308.40, 603,202,962.60 and 143,358,970.80

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Solution

The fourth proportional to 402,135,308.40, 603,202,962.60 and 143,358,970.80 is: 215,038,456.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,135,308.40 : 603,202,962.60 = 143,358,970.80 : x
  2. Step 2: Convert to fraction form
    402,135,308.40/603,202,962.60 = 143,358,970.80/x
  3. Step 3: Cross multiply
    402,135,308.40x = 603,202,962.60 × 143,358,970.80
  4. Step 4: Simplify right side
    402,135,308.40x = 86,474,555,901,846,896
  5. Step 5: Solve for x
    x = 86,474,555,901,846,896/402,135,308.40
  6. Step 6: Final answer
    x = 215,038,456.20

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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.