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Finding the Fourth Proportional to 470,855.70, 649,779.45 and 255,994.26

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Solution

The fourth proportional to 470,855.70, 649,779.45 and 255,994.26 is: 353,271.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,855.70 : 649,779.45 = 255,994.26 : x
  2. Step 2: Convert to fraction form
    470,855.70/649,779.45 = 255,994.26/x
  3. Step 3: Cross multiply
    470,855.70x = 649,779.45 × 255,994.26
  4. Step 4: Simplify right side
    470,855.70x = 166,339,809,465.96
  5. Step 5: Solve for x
    x = 166,339,809,465.96/470,855.70
  6. Step 6: Final answer
    x = 353,271.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.