Home / 390,165,535.23-585,102,488.67-156,917,519.79

Finding the Fourth Proportional to 390,165,535.23, 585,102,488.67 and 156,917,519.79

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Solution

The fourth proportional to 390,165,535.23, 585,102,488.67 and 156,917,519.79 is: 235,317,635.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,165,535.23 : 585,102,488.67 = 156,917,519.79 : x
  2. Step 2: Convert to fraction form
    390,165,535.23/585,102,488.67 = 156,917,519.79/x
  3. Step 3: Cross multiply
    390,165,535.23x = 585,102,488.67 × 156,917,519.79
  4. Step 4: Simplify right side
    390,165,535.23x = 91,812,831,345,052,960
  5. Step 5: Solve for x
    x = 91,812,831,345,052,960/390,165,535.23
  6. Step 6: Final answer
    x = 235,317,635.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.