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Finding the Fourth Proportional to 388,816.13, 583,224.20 and 93,328.13

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Solution

The fourth proportional to 388,816.13, 583,224.20 and 93,328.13 is: 139,992.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,816.13 : 583,224.20 = 93,328.13 : x
  2. Step 2: Convert to fraction form
    388,816.13/583,224.20 = 93,328.13/x
  3. Step 3: Cross multiply
    388,816.13x = 583,224.20 × 93,328.13
  4. Step 4: Simplify right side
    388,816.13x = 54,431,223,956.75
  5. Step 5: Solve for x
    x = 54,431,223,956.75/388,816.13
  6. Step 6: Final answer
    x = 139,992.20

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Similar ratio
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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.