Home / 255,756.21-383,870.93-129,485.18

Finding the Fourth Proportional to 255,756.21, 383,870.93 and 129,485.18

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Solution

The fourth proportional to 255,756.21, 383,870.93 and 129,485.18 is: 194,347.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,756.21 : 383,870.93 = 129,485.18 : x
  2. Step 2: Convert to fraction form
    255,756.21/383,870.93 = 129,485.18/x
  3. Step 3: Cross multiply
    255,756.21x = 383,870.93 × 129,485.18
  4. Step 4: Simplify right side
    255,756.21x = 49,705,593,901.04
  5. Step 5: Solve for x
    x = 49,705,593,901.04/255,756.21
  6. Step 6: Final answer
    x = 194,347.55

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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.