Home / 312,941,038.29-431,870,778.24-171,818,207.03

Finding the Fourth Proportional to 312,941,038.29, 431,870,778.24 and 171,818,207.03

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Solution

The fourth proportional to 312,941,038.29, 431,870,778.24 and 171,818,207.03 is: 237,115,794.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,941,038.29 : 431,870,778.24 = 171,818,207.03 : x
  2. Step 2: Convert to fraction form
    312,941,038.29/431,870,778.24 = 171,818,207.03/x
  3. Step 3: Cross multiply
    312,941,038.29x = 431,870,778.24 × 171,818,207.03
  4. Step 4: Simplify right side
    312,941,038.29x = 74,203,262,786,282,896
  5. Step 5: Solve for x
    x = 74,203,262,786,282,896/312,941,038.29
  6. Step 6: Final answer
    x = 237,115,794.05

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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.