Home / 390,165,536.73-585,102,490.92-156,917,521.29

Finding the Fourth Proportional to 390,165,536.73, 585,102,490.92 and 156,917,521.29

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Solution

The fourth proportional to 390,165,536.73, 585,102,490.92 and 156,917,521.29 is: 235,317,638.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,165,536.73 : 585,102,490.92 = 156,917,521.29 : x
  2. Step 2: Convert to fraction form
    390,165,536.73/585,102,490.92 = 156,917,521.29/x
  3. Step 3: Cross multiply
    390,165,536.73x = 585,102,490.92 × 156,917,521.29
  4. Step 4: Simplify right side
    390,165,536.73x = 91,812,832,575,771,120
  5. Step 5: Solve for x
    x = 91,812,832,575,771,120/390,165,536.73
  6. Step 6: Final answer
    x = 235,317,638.11

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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.