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Finding the Fourth Proportional to 388,957.40, 583,436.10 and 93,469.40

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Solution

The fourth proportional to 388,957.40, 583,436.10 and 93,469.40 is: 140,204.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,957.40 : 583,436.10 = 93,469.40 : x
  2. Step 2: Convert to fraction form
    388,957.40/583,436.10 = 93,469.40/x
  3. Step 3: Cross multiply
    388,957.40x = 583,436.10 × 93,469.40
  4. Step 4: Simplify right side
    388,957.40x = 54,533,422,205.34
  5. Step 5: Solve for x
    x = 54,533,422,205.34/388,957.40
  6. Step 6: Final answer
    x = 140,204.10

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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.