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Finding the Fourth Proportional to 255,245.79, 382,871.39 and 105,382.83

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Solution

The fourth proportional to 255,245.79, 382,871.39 and 105,382.83 is: 158,075.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,245.79 : 382,871.39 = 105,382.83 : x
  2. Step 2: Convert to fraction form
    255,245.79/382,871.39 = 105,382.83/x
  3. Step 3: Cross multiply
    255,245.79x = 382,871.39 × 105,382.83
  4. Step 4: Simplify right side
    255,245.79x = 40,348,070,077.32
  5. Step 5: Solve for x
    x = 40,348,070,077.32/255,245.79
  6. Step 6: Final answer
    x = 158,075.36

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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.