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Finding the Fourth Proportional to 259,670.80, 389,506.20 and 243,924.40

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Solution

The fourth proportional to 259,670.80, 389,506.20 and 243,924.40 is: 365,886.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,670.80 : 389,506.20 = 243,924.40 : x
  2. Step 2: Convert to fraction form
    259,670.80/389,506.20 = 243,924.40/x
  3. Step 3: Cross multiply
    259,670.80x = 389,506.20 × 243,924.40
  4. Step 4: Simplify right side
    259,670.80x = 95,010,066,131.28
  5. Step 5: Solve for x
    x = 95,010,066,131.28/259,670.80
  6. Step 6: Final answer
    x = 365,886.60

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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.