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Finding the Fourth Proportional to 388,722.88, 581,767.60 and 239,058.10

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Solution

The fourth proportional to 388,722.88, 581,767.60 and 239,058.10 is: 357,777.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,722.88 : 581,767.60 = 239,058.10 : x
  2. Step 2: Convert to fraction form
    388,722.88/581,767.60 = 239,058.10/x
  3. Step 3: Cross multiply
    388,722.88x = 581,767.60 × 239,058.10
  4. Step 4: Simplify right side
    388,722.88x = 139,076,257,097.56
  5. Step 5: Solve for x
    x = 139,076,257,097.56/388,722.88
  6. Step 6: Final answer
    x = 357,777.39

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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.