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Finding the Fourth Proportional to 579,412, 869,503.64 and 238,135.32

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Solution

The fourth proportional to 579,412, 869,503.64 and 238,135.32 is: 357,361.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,412 : 869,503.64 = 238,135.32 : x
  2. Step 2: Convert to fraction form
    579,412/869,503.64 = 238,135.32/x
  3. Step 3: Cross multiply
    579,412x = 869,503.64 × 238,135.32
  4. Step 4: Simplify right side
    579,412x = 207,059,527,552.57
  5. Step 5: Solve for x
    x = 207,059,527,552.57/579,412
  6. Step 6: Final answer
    x = 357,361.48

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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.