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Finding the Fourth Proportional to 209,952,221.20, 314,928,331.80 and 185,293,358.80

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Solution

The fourth proportional to 209,952,221.20, 314,928,331.80 and 185,293,358.80 is: 277,940,038.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,221.20 : 314,928,331.80 = 185,293,358.80 : x
  2. Step 2: Convert to fraction form
    209,952,221.20/314,928,331.80 = 185,293,358.80/x
  3. Step 3: Cross multiply
    209,952,221.20x = 314,928,331.80 × 185,293,358.80
  4. Step 4: Simplify right side
    209,952,221.20x = 58,354,128,380,502,856
  5. Step 5: Solve for x
    x = 58,354,128,380,502,856/209,952,221.20
  6. Step 6: Final answer
    x = 277,940,038.20

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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.