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Finding the Fourth Proportional to 255,240.79, 382,847.21 and 77,732.93

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Solution

The fourth proportional to 255,240.79, 382,847.21 and 77,732.93 is: 116,595.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,240.79 : 382,847.21 = 77,732.93 : x
  2. Step 2: Convert to fraction form
    255,240.79/382,847.21 = 77,732.93/x
  3. Step 3: Cross multiply
    255,240.79x = 382,847.21 × 77,732.93
  4. Step 4: Simplify right side
    255,240.79x = 29,759,834,986.96
  5. Step 5: Solve for x
    x = 29,759,834,986.96/255,240.79
  6. Step 6: Final answer
    x = 116,595.14

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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.