Home / 385,442,275.26-531,911,019.75-209,230,392.66

Finding the Fourth Proportional to 385,442,275.26, 531,911,019.75 and 209,230,392.66

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Solution

The fourth proportional to 385,442,275.26, 531,911,019.75 and 209,230,392.66 is: 288,738,310.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,442,275.26 : 531,911,019.75 = 209,230,392.66 : x
  2. Step 2: Convert to fraction form
    385,442,275.26/531,911,019.75 = 209,230,392.66/x
  3. Step 3: Cross multiply
    385,442,275.26x = 531,911,019.75 × 209,230,392.66
  4. Step 4: Simplify right side
    385,442,275.26x = 111,291,951,522,473,520
  5. Step 5: Solve for x
    x = 111,291,951,522,473,520/385,442,275.26
  6. Step 6: Final answer
    x = 288,738,310.94

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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.