Home / 390,734,793.36-539,229,179.16-214,530,215.40

Finding the Fourth Proportional to 390,734,793.36, 539,229,179.16 and 214,530,215.40

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Solution

The fourth proportional to 390,734,793.36, 539,229,179.16 and 214,530,215.40 is: 296,060,023.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,734,793.36 : 539,229,179.16 = 214,530,215.40 : x
  2. Step 2: Convert to fraction form
    390,734,793.36/539,229,179.16 = 214,530,215.40/x
  3. Step 3: Cross multiply
    390,734,793.36x = 539,229,179.16 × 214,530,215.40
  4. Step 4: Simplify right side
    390,734,793.36x = 115,680,951,955,159,984
  5. Step 5: Solve for x
    x = 115,680,951,955,159,984/390,734,793.36
  6. Step 6: Final answer
    x = 296,060,023.12

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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.