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Finding the Fourth Proportional to 470,840.67, 649,767.21 and 255,980.25

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Solution

The fourth proportional to 470,840.67, 649,767.21 and 255,980.25 is: 353,256.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,840.67 : 649,767.21 = 255,980.25 : x
  2. Step 2: Convert to fraction form
    470,840.67/649,767.21 = 255,980.25/x
  3. Step 3: Cross multiply
    470,840.67x = 649,767.21 × 255,980.25
  4. Step 4: Simplify right side
    470,840.67x = 166,327,572,857.60
  5. Step 5: Solve for x
    x = 166,327,572,857.60/470,840.67
  6. Step 6: Final answer
    x = 353,256.60

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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.