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Finding the Fourth Proportional to 388,986.60, 583,479.90 and 93,498.60

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Solution

The fourth proportional to 388,986.60, 583,479.90 and 93,498.60 is: 140,247.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,986.60 : 583,479.90 = 93,498.60 : x
  2. Step 2: Convert to fraction form
    388,986.60/583,479.90 = 93,498.60/x
  3. Step 3: Cross multiply
    388,986.60x = 583,479.90 × 93,498.60
  4. Step 4: Simplify right side
    388,986.60x = 54,554,553,778.14
  5. Step 5: Solve for x
    x = 54,554,553,778.14/388,986.60
  6. Step 6: Final answer
    x = 140,247.90

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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.