Home / 255,890.40-383,835.60-89,678.40

Finding the Fourth Proportional to 255,890.40, 383,835.60 and 89,678.40

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Solution

The fourth proportional to 255,890.40, 383,835.60 and 89,678.40 is: 134,517.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,890.40 : 383,835.60 = 89,678.40 : x
  2. Step 2: Convert to fraction form
    255,890.40/383,835.60 = 89,678.40/x
  3. Step 3: Cross multiply
    255,890.40x = 383,835.60 × 89,678.40
  4. Step 4: Simplify right side
    255,890.40x = 34,421,762,471.04
  5. Step 5: Solve for x
    x = 34,421,762,471.04/255,890.40
  6. Step 6: Final answer
    x = 134,517.60

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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.