Home / 289,983.60-434,975.40-243,327.60

Finding the Fourth Proportional to 289,983.60, 434,975.40 and 243,327.60

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Solution

The fourth proportional to 289,983.60, 434,975.40 and 243,327.60 is: 364,991.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,983.60 : 434,975.40 = 243,327.60 : x
  2. Step 2: Convert to fraction form
    289,983.60/434,975.40 = 243,327.60/x
  3. Step 3: Cross multiply
    289,983.60x = 434,975.40 × 243,327.60
  4. Step 4: Simplify right side
    289,983.60x = 105,841,520,141.04
  5. Step 5: Solve for x
    x = 105,841,520,141.04/289,983.60
  6. Step 6: Final answer
    x = 364,991.40

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Similar ratio
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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.