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Finding the Fourth Proportional to 398,048.80, 596,295.60 and 239,807.20

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Solution

The fourth proportional to 398,048.80, 596,295.60 and 239,807.20 is: 359,242.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,048.80 : 596,295.60 = 239,807.20 : x
  2. Step 2: Convert to fraction form
    398,048.80/596,295.60 = 239,807.20/x
  3. Step 3: Cross multiply
    398,048.80x = 596,295.60 × 239,807.20
  4. Step 4: Simplify right side
    398,048.80x = 142,995,978,208.32
  5. Step 5: Solve for x
    x = 142,995,978,208.32/398,048.80
  6. Step 6: Final answer
    x = 359,242.33

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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.