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Finding the Fourth Proportional to 508,443.86, 701,981.22 and 315,056.79

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Solution

The fourth proportional to 508,443.86, 701,981.22 and 315,056.79 is: 434,982.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,443.86 : 701,981.22 = 315,056.79 : x
  2. Step 2: Convert to fraction form
    508,443.86/701,981.22 = 315,056.79/x
  3. Step 3: Cross multiply
    508,443.86x = 701,981.22 × 315,056.79
  4. Step 4: Simplify right side
    508,443.86x = 221,163,950,994.95
  5. Step 5: Solve for x
    x = 221,163,950,994.95/508,443.86
  6. Step 6: Final answer
    x = 434,982.04

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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.