Home / 368,412,389.52-508,453,679.34-209,681,105.70

Finding the Fourth Proportional to 368,412,389.52, 508,453,679.34 and 209,681,105.70

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Solution

The fourth proportional to 368,412,389.52, 508,453,679.34 and 209,681,105.70 is: 289,385,299.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,412,389.52 : 508,453,679.34 = 209,681,105.70 : x
  2. Step 2: Convert to fraction form
    368,412,389.52/508,453,679.34 = 209,681,105.70/x
  3. Step 3: Cross multiply
    368,412,389.52x = 508,453,679.34 × 209,681,105.70
  4. Step 4: Simplify right side
    368,412,389.52x = 106,613,129,681,244,432
  5. Step 5: Solve for x
    x = 106,613,129,681,244,432/368,412,389.52
  6. Step 6: Final answer
    x = 289,385,299.50

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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.