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Finding the Fourth Proportional to 255,235.32, 382,870.56 and 86,686.86

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Solution

The fourth proportional to 255,235.32, 382,870.56 and 86,686.86 is: 130,036.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,235.32 : 382,870.56 = 86,686.86 : x
  2. Step 2: Convert to fraction form
    255,235.32/382,870.56 = 86,686.86/x
  3. Step 3: Cross multiply
    255,235.32x = 382,870.56 × 86,686.86
  4. Step 4: Simplify right side
    255,235.32x = 33,189,846,632.84
  5. Step 5: Solve for x
    x = 33,189,846,632.84/255,235.32
  6. Step 6: Final answer
    x = 130,036.26

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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.