Home / 385,441,474.23-531,909,909.21-209,229,588.95

Finding the Fourth Proportional to 385,441,474.23, 531,909,909.21 and 209,229,588.95

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Solution

The fourth proportional to 385,441,474.23, 531,909,909.21 and 209,229,588.95 is: 288,737,199.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,441,474.23 : 531,909,909.21 = 209,229,588.95 : x
  2. Step 2: Convert to fraction form
    385,441,474.23/531,909,909.21 = 209,229,588.95/x
  3. Step 3: Cross multiply
    385,441,474.23x = 531,909,909.21 × 209,229,588.95
  4. Step 4: Simplify right side
    385,441,474.23x = 111,291,291,662,440,112
  5. Step 5: Solve for x
    x = 111,291,291,662,440,112/385,441,474.23
  6. Step 6: Final answer
    x = 288,737,199.04

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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.