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Finding the Fourth Proportional to 426,724, 588,879.12 and 238,308

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Solution

The fourth proportional to 426,724, 588,879.12 and 238,308 is: 328,865.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,724 : 588,879.12 = 238,308 : x
  2. Step 2: Convert to fraction form
    426,724/588,879.12 = 238,308/x
  3. Step 3: Cross multiply
    426,724x = 588,879.12 × 238,308
  4. Step 4: Simplify right side
    426,724x = 140,334,605,328.96
  5. Step 5: Solve for x
    x = 140,334,605,328.96/426,724
  6. Step 6: Final answer
    x = 328,865.04

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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.