Home / 385,441,648.02-531,910,148.96-209,229,762.71

Finding the Fourth Proportional to 385,441,648.02, 531,910,148.96 and 209,229,762.71

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Solution

The fourth proportional to 385,441,648.02, 531,910,148.96 and 209,229,762.71 is: 288,737,438.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,441,648.02 : 531,910,148.96 = 209,229,762.71 : x
  2. Step 2: Convert to fraction form
    385,441,648.02/531,910,148.96 = 209,229,762.71/x
  3. Step 3: Cross multiply
    385,441,648.02x = 531,910,148.96 × 209,229,762.71
  4. Step 4: Simplify right side
    385,441,648.02x = 111,291,434,251,794,400
  5. Step 5: Solve for x
    x = 111,291,434,251,794,400/385,441,648.02
  6. Step 6: Final answer
    x = 288,737,438.79

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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.