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Finding the Fourth Proportional to 255,315.84, 383,028.81 and 127,301.92

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Solution

The fourth proportional to 255,315.84, 383,028.81 and 127,301.92 is: 190,980.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,315.84 : 383,028.81 = 127,301.92 : x
  2. Step 2: Convert to fraction form
    255,315.84/383,028.81 = 127,301.92/x
  3. Step 3: Cross multiply
    255,315.84x = 383,028.81 × 127,301.92
  4. Step 4: Simplify right side
    255,315.84x = 48,760,301,970.74
  5. Step 5: Solve for x
    x = 48,760,301,970.74/255,315.84
  6. Step 6: Final answer
    x = 190,980.32

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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.