Home / 385,441,597.32-531,910,078.58-209,229,712.06

Finding the Fourth Proportional to 385,441,597.32, 531,910,078.58 and 209,229,712.06

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Solution

The fourth proportional to 385,441,597.32, 531,910,078.58 and 209,229,712.06 is: 288,737,368.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,441,597.32 : 531,910,078.58 = 209,229,712.06 : x
  2. Step 2: Convert to fraction form
    385,441,597.32/531,910,078.58 = 209,229,712.06/x
  3. Step 3: Cross multiply
    385,441,597.32x = 531,910,078.58 × 209,229,712.06
  4. Step 4: Simplify right side
    385,441,597.32x = 111,291,392,583,105,376
  5. Step 5: Solve for x
    x = 111,291,392,583,105,376/385,441,597.32
  6. Step 6: Final answer
    x = 288,737,368.66

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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.