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Finding the Fourth Proportional to 388,943.75, 583,415.63 and 93,455.75

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Solution

The fourth proportional to 388,943.75, 583,415.63 and 93,455.75 is: 140,183.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,943.75 : 583,415.63 = 93,455.75 : x
  2. Step 2: Convert to fraction form
    388,943.75/583,415.63 = 93,455.75/x
  3. Step 3: Cross multiply
    388,943.75x = 583,415.63 × 93,455.75
  4. Step 4: Simplify right side
    388,943.75x = 54,523,545,263.37
  5. Step 5: Solve for x
    x = 54,523,545,263.37/388,943.75
  6. Step 6: Final answer
    x = 140,183.63

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1.5x scale

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.