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Finding the Fourth Proportional to 255,798.80, 383,696.64 and 66,258.66

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Solution

The fourth proportional to 255,798.80, 383,696.64 and 66,258.66 is: 99,387.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,798.80 : 383,696.64 = 66,258.66 : x
  2. Step 2: Convert to fraction form
    255,798.80/383,696.64 = 66,258.66/x
  3. Step 3: Cross multiply
    255,798.80x = 383,696.64 × 66,258.66
  4. Step 4: Simplify right side
    255,798.80x = 25,423,225,212.90
  5. Step 5: Solve for x
    x = 25,423,225,212.90/255,798.80
  6. Step 6: Final answer
    x = 99,387.59

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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.