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Finding the Fourth Proportional to 556,831.23, 835,337.31 and 172,490.33

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Solution

The fourth proportional to 556,831.23, 835,337.31 and 172,490.33 is: 258,763.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,831.23 : 835,337.31 = 172,490.33 : x
  2. Step 2: Convert to fraction form
    556,831.23/835,337.31 = 172,490.33/x
  3. Step 3: Cross multiply
    556,831.23x = 835,337.31 × 172,490.33
  4. Step 4: Simplify right side
    556,831.23x = 144,087,605,005.95
  5. Step 5: Solve for x
    x = 144,087,605,005.95/556,831.23
  6. Step 6: Final answer
    x = 258,763.51

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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.