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Finding the Fourth Proportional to 255,389.94, 382,953.66 and 137,160.72

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Solution

The fourth proportional to 255,389.94, 382,953.66 and 137,160.72 is: 205,670.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,389.94 : 382,953.66 = 137,160.72 : x
  2. Step 2: Convert to fraction form
    255,389.94/382,953.66 = 137,160.72/x
  3. Step 3: Cross multiply
    255,389.94x = 382,953.66 × 137,160.72
  4. Step 4: Simplify right side
    255,389.94x = 52,526,199,732.24
  5. Step 5: Solve for x
    x = 52,526,199,732.24/255,389.94
  6. Step 6: Final answer
    x = 205,670.59

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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.