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Finding the Fourth Proportional to 255,060.20, 382,152.90 and 121,653.20

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Solution

The fourth proportional to 255,060.20, 382,152.90 and 121,653.20 is: 182,271.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,060.20 : 382,152.90 = 121,653.20 : x
  2. Step 2: Convert to fraction form
    255,060.20/382,152.90 = 121,653.20/x
  3. Step 3: Cross multiply
    255,060.20x = 382,152.90 × 121,653.20
  4. Step 4: Simplify right side
    255,060.20x = 46,490,123,174.28
  5. Step 5: Solve for x
    x = 46,490,123,174.28/255,060.20
  6. Step 6: Final answer
    x = 182,271.18

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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.