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Finding the Fourth Proportional to 357,532.80, 536,140.80 and 120,811.20

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Solution

The fourth proportional to 357,532.80, 536,140.80 and 120,811.20 is: 181,163.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,532.80 : 536,140.80 = 120,811.20 : x
  2. Step 2: Convert to fraction form
    357,532.80/536,140.80 = 120,811.20/x
  3. Step 3: Cross multiply
    357,532.80x = 536,140.80 × 120,811.20
  4. Step 4: Simplify right side
    357,532.80x = 64,771,813,416.96
  5. Step 5: Solve for x
    x = 64,771,813,416.96/357,532.80
  6. Step 6: Final answer
    x = 181,163.28

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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.