Home / 354,218.40-531,327.60-319,226.40

Finding the Fourth Proportional to 354,218.40, 531,327.60 and 319,226.40

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Solution

The fourth proportional to 354,218.40, 531,327.60 and 319,226.40 is: 478,839.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,218.40 : 531,327.60 = 319,226.40 : x
  2. Step 2: Convert to fraction form
    354,218.40/531,327.60 = 319,226.40/x
  3. Step 3: Cross multiply
    354,218.40x = 531,327.60 × 319,226.40
  4. Step 4: Simplify right side
    354,218.40x = 169,613,796,968.64
  5. Step 5: Solve for x
    x = 169,613,796,968.64/354,218.40
  6. Step 6: Final answer
    x = 478,839.60

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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.