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Finding the Fourth Proportional to 255,473.94, 382,972.64 and 86,879.06

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Solution

The fourth proportional to 255,473.94, 382,972.64 and 86,879.06 is: 130,237.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,473.94 : 382,972.64 = 86,879.06 : x
  2. Step 2: Convert to fraction form
    255,473.94/382,972.64 = 86,879.06/x
  3. Step 3: Cross multiply
    255,473.94x = 382,972.64 × 86,879.06
  4. Step 4: Simplify right side
    255,473.94x = 33,272,302,968.92
  5. Step 5: Solve for x
    x = 33,272,302,968.92/255,473.94
  6. Step 6: Final answer
    x = 130,237.56

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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.