Home / 390,633,747.95-538,829,362.88-231,751,385.58

Finding the Fourth Proportional to 390,633,747.95, 538,829,362.88 and 231,751,385.58

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Solution

The fourth proportional to 390,633,747.95, 538,829,362.88 and 231,751,385.58 is: 319,671,436.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,633,747.95 : 538,829,362.88 = 231,751,385.58 : x
  2. Step 2: Convert to fraction form
    390,633,747.95/538,829,362.88 = 231,751,385.58/x
  3. Step 3: Cross multiply
    390,633,747.95x = 538,829,362.88 × 231,751,385.58
  4. Step 4: Simplify right side
    390,633,747.95x = 124,874,451,437,469,872
  5. Step 5: Solve for x
    x = 124,874,451,437,469,872/390,633,747.95
  6. Step 6: Final answer
    x = 319,671,436.72

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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.