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Finding the Fourth Proportional to 255,779.59, 383,563.82 and 87,313.50

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Solution

The fourth proportional to 255,779.59, 383,563.82 and 87,313.50 is: 130,934.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,779.59 : 383,563.82 = 87,313.50 : x
  2. Step 2: Convert to fraction form
    255,779.59/383,563.82 = 87,313.50/x
  3. Step 3: Cross multiply
    255,779.59x = 383,563.82 × 87,313.50
  4. Step 4: Simplify right side
    255,779.59x = 33,490,299,815.85
  5. Step 5: Solve for x
    x = 33,490,299,815.85/255,779.59
  6. Step 6: Final answer
    x = 130,934.22

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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.