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Finding the Fourth Proportional to 246,779.60, 370,205.85 and 78,315.80

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Solution

The fourth proportional to 246,779.60, 370,205.85 and 78,315.80 is: 117,485.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,779.60 : 370,205.85 = 78,315.80 : x
  2. Step 2: Convert to fraction form
    246,779.60/370,205.85 = 78,315.80/x
  3. Step 3: Cross multiply
    246,779.60x = 370,205.85 × 78,315.80
  4. Step 4: Simplify right side
    246,779.60x = 28,992,967,307.43
  5. Step 5: Solve for x
    x = 28,992,967,307.43/246,779.60
  6. Step 6: Final answer
    x = 117,485.27

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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.