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Finding the Fourth Proportional to 255,182.40, 382,804.88 and 86,730.48

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Solution

The fourth proportional to 255,182.40, 382,804.88 and 86,730.48 is: 130,106.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,182.40 : 382,804.88 = 86,730.48 : x
  2. Step 2: Convert to fraction form
    255,182.40/382,804.88 = 86,730.48/x
  3. Step 3: Cross multiply
    255,182.40x = 382,804.88 × 86,730.48
  4. Step 4: Simplify right side
    255,182.40x = 33,200,850,555.09
  5. Step 5: Solve for x
    x = 33,200,850,555.09/255,182.40
  6. Step 6: Final answer
    x = 130,106.35

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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.