Home / 368,416,982.15-508,460,022.45-209,685,700.40

Finding the Fourth Proportional to 368,416,982.15, 508,460,022.45 and 209,685,700.40

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Solution

The fourth proportional to 368,416,982.15, 508,460,022.45 and 209,685,700.40 is: 289,391,643.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,416,982.15 : 508,460,022.45 = 209,685,700.40 : x
  2. Step 2: Convert to fraction form
    368,416,982.15/508,460,022.45 = 209,685,700.40/x
  3. Step 3: Cross multiply
    368,416,982.15x = 508,460,022.45 × 209,685,700.40
  4. Step 4: Simplify right side
    368,416,982.15x = 106,616,795,933,738,720
  5. Step 5: Solve for x
    x = 106,616,795,933,738,720/368,416,982.15
  6. Step 6: Final answer
    x = 289,391,643.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.