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Finding the Fourth Proportional to 215,532.40, 323,444.40 and 120,762.40

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Solution

The fourth proportional to 215,532.40, 323,444.40 and 120,762.40 is: 181,225.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,532.40 : 323,444.40 = 120,762.40 : x
  2. Step 2: Convert to fraction form
    215,532.40/323,444.40 = 120,762.40/x
  3. Step 3: Cross multiply
    215,532.40x = 323,444.40 × 120,762.40
  4. Step 4: Simplify right side
    215,532.40x = 39,059,922,010.56
  5. Step 5: Solve for x
    x = 39,059,922,010.56/215,532.40
  6. Step 6: Final answer
    x = 181,225.29

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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.