Home / 288,665,967.49-398,687,845.53-195,685,050.13

Finding the Fourth Proportional to 288,665,967.49, 398,687,845.53 and 195,685,050.13

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Solution

The fourth proportional to 288,665,967.49, 398,687,845.53 and 195,685,050.13 is: 270,268,267.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,665,967.49 : 398,687,845.53 = 195,685,050.13 : x
  2. Step 2: Convert to fraction form
    288,665,967.49/398,687,845.53 = 195,685,050.13/x
  3. Step 3: Cross multiply
    288,665,967.49x = 398,687,845.53 × 195,685,050.13
  4. Step 4: Simplify right side
    288,665,967.49x = 78,017,251,038,759,744
  5. Step 5: Solve for x
    x = 78,017,251,038,759,744/288,665,967.49
  6. Step 6: Final answer
    x = 270,268,267.91

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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.