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Finding the Fourth Proportional to 388,930.50, 583,395.75 and 93,442.50

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Solution

The fourth proportional to 388,930.50, 583,395.75 and 93,442.50 is: 140,163.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,930.50 : 583,395.75 = 93,442.50 : x
  2. Step 2: Convert to fraction form
    388,930.50/583,395.75 = 93,442.50/x
  3. Step 3: Cross multiply
    388,930.50x = 583,395.75 × 93,442.50
  4. Step 4: Simplify right side
    388,930.50x = 54,513,957,369.38
  5. Step 5: Solve for x
    x = 54,513,957,369.38/388,930.50
  6. Step 6: Final answer
    x = 140,163.75

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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.