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Finding the Fourth Proportional to 388,668.94, 581,686.58 and 239,004.02

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Solution

The fourth proportional to 388,668.94, 581,686.58 and 239,004.02 is: 357,696.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,668.94 : 581,686.58 = 239,004.02 : x
  2. Step 2: Convert to fraction form
    388,668.94/581,686.58 = 239,004.02/x
  3. Step 3: Cross multiply
    388,668.94x = 581,686.58 × 239,004.02
  4. Step 4: Simplify right side
    388,668.94x = 139,025,431,000.05
  5. Step 5: Solve for x
    x = 139,025,431,000.05/388,668.94
  6. Step 6: Final answer
    x = 357,696.27

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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.