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Finding the Fourth Proportional to 388,657.94, 581,670.09 and 238,993.02

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Solution

The fourth proportional to 388,657.94, 581,670.09 and 238,993.02 is: 357,679.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,657.94 : 581,670.09 = 238,993.02 : x
  2. Step 2: Convert to fraction form
    388,657.94/581,670.09 = 238,993.02/x
  3. Step 3: Cross multiply
    388,657.94x = 581,670.09 × 238,993.02
  4. Step 4: Simplify right side
    388,657.94x = 139,015,091,452.77
  5. Step 5: Solve for x
    x = 139,015,091,452.77/388,657.94
  6. Step 6: Final answer
    x = 357,679.80

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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.