Home / 376,421,589.09-519,439,021.02-209,152,130.85

Finding the Fourth Proportional to 376,421,589.09, 519,439,021.02 and 209,152,130.85

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Solution

The fourth proportional to 376,421,589.09, 519,439,021.02 and 209,152,130.85 is: 288,617,287.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,421,589.09 : 519,439,021.02 = 209,152,130.85 : x
  2. Step 2: Convert to fraction form
    376,421,589.09/519,439,021.02 = 209,152,130.85/x
  3. Step 3: Cross multiply
    376,421,589.09x = 519,439,021.02 × 209,152,130.85
  4. Step 4: Simplify right side
    376,421,589.09x = 108,641,778,092,970,928
  5. Step 5: Solve for x
    x = 108,641,778,092,970,928/376,421,589.09
  6. Step 6: Final answer
    x = 288,617,287.75

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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.