Home / 385,291,653.33-531,702,481.64-209,079,648.69

Finding the Fourth Proportional to 385,291,653.33, 531,702,481.64 and 209,079,648.69

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Solution

The fourth proportional to 385,291,653.33, 531,702,481.64 and 209,079,648.69 is: 288,529,915.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,291,653.33 : 531,702,481.64 = 209,079,648.69 : x
  2. Step 2: Convert to fraction form
    385,291,653.33/531,702,481.64 = 209,079,648.69/x
  3. Step 3: Cross multiply
    385,291,653.33x = 531,702,481.64 × 209,079,648.69
  4. Step 4: Simplify right side
    385,291,653.33x = 111,168,168,068,892,368
  5. Step 5: Solve for x
    x = 111,168,168,068,892,368/385,291,653.33
  6. Step 6: Final answer
    x = 288,529,915.22

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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.