Home / 255,235.06-382,870.20-86,686.61

Finding the Fourth Proportional to 255,235.06, 382,870.20 and 86,686.61

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Solution

The fourth proportional to 255,235.06, 382,870.20 and 86,686.61 is: 130,035.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,235.06 : 382,870.20 = 86,686.61 : x
  2. Step 2: Convert to fraction form
    255,235.06/382,870.20 = 86,686.61/x
  3. Step 3: Cross multiply
    255,235.06x = 382,870.20 × 86,686.61
  4. Step 4: Simplify right side
    255,235.06x = 33,189,719,708.02
  5. Step 5: Solve for x
    x = 33,189,719,708.02/255,235.06
  6. Step 6: Final answer
    x = 130,035.90

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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.