Home / 215,678,358.40-323,517,537.60-143,118,947.20

Finding the Fourth Proportional to 215,678,358.40, 323,517,537.60 and 143,118,947.20

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Solution

The fourth proportional to 215,678,358.40, 323,517,537.60 and 143,118,947.20 is: 214,678,420.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,678,358.40 : 323,517,537.60 = 143,118,947.20 : x
  2. Step 2: Convert to fraction form
    215,678,358.40/323,517,537.60 = 143,118,947.20/x
  3. Step 3: Cross multiply
    215,678,358.40x = 323,517,537.60 × 143,118,947.20
  4. Step 4: Simplify right side
    215,678,358.40x = 46,301,489,382,048,416
  5. Step 5: Solve for x
    x = 46,301,489,382,048,416/215,678,358.40
  6. Step 6: Final answer
    x = 214,678,420.80

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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.