Home / 386,581,113.72-533,482,015.92-212,740,857.72

Finding the Fourth Proportional to 386,581,113.72, 533,482,015.92 and 212,740,857.72

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Solution

The fourth proportional to 386,581,113.72, 533,482,015.92 and 212,740,857.72 is: 293,582,427.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,581,113.72 : 533,482,015.92 = 212,740,857.72 : x
  2. Step 2: Convert to fraction form
    386,581,113.72/533,482,015.92 = 212,740,857.72/x
  3. Step 3: Cross multiply
    386,581,113.72x = 533,482,015.92 × 212,740,857.72
  4. Step 4: Simplify right side
    386,581,113.72x = 113,493,421,645,015,504
  5. Step 5: Solve for x
    x = 113,493,421,645,015,504/386,581,113.72
  6. Step 6: Final answer
    x = 293,582,427.12

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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.