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Finding the Fourth Proportional to 388,660.95, 581,674.59 and 238,996.02

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Solution

The fourth proportional to 388,660.95, 581,674.59 and 238,996.02 is: 357,684.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,660.95 : 581,674.59 = 238,996.02 : x
  2. Step 2: Convert to fraction form
    388,660.95/581,674.59 = 238,996.02/x
  3. Step 3: Cross multiply
    388,660.95x = 581,674.59 × 238,996.02
  4. Step 4: Simplify right side
    388,660.95x = 139,017,911,945.13
  5. Step 5: Solve for x
    x = 139,017,911,945.13/388,660.95
  6. Step 6: Final answer
    x = 357,684.28

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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.