Home / 368,412,420.69-508,453,722.25-209,681,136.95

Finding the Fourth Proportional to 368,412,420.69, 508,453,722.25 and 209,681,136.95

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Solution

The fourth proportional to 368,412,420.69, 508,453,722.25 and 209,681,136.95 is: 289,385,342.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,412,420.69 : 508,453,722.25 = 209,681,136.95 : x
  2. Step 2: Convert to fraction form
    368,412,420.69/508,453,722.25 = 209,681,136.95/x
  3. Step 3: Cross multiply
    368,412,420.69x = 508,453,722.25 × 209,681,136.95
  4. Step 4: Simplify right side
    368,412,420.69x = 106,613,154,564,773,040
  5. Step 5: Solve for x
    x = 106,613,154,564,773,040/368,412,420.69
  6. Step 6: Final answer
    x = 289,385,342.56

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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.