Home / 385,241.34-531,622.80-213,154.81

Finding the Fourth Proportional to 385,241.34, 531,622.80 and 213,154.81

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Solution

The fourth proportional to 385,241.34, 531,622.80 and 213,154.81 is: 294,147.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,241.34 : 531,622.80 = 213,154.81 : x
  2. Step 2: Convert to fraction form
    385,241.34/531,622.80 = 213,154.81/x
  3. Step 3: Cross multiply
    385,241.34x = 531,622.80 × 213,154.81
  4. Step 4: Simplify right side
    385,241.34x = 113,317,956,925.67
  5. Step 5: Solve for x
    x = 113,317,956,925.67/385,241.34
  6. Step 6: Final answer
    x = 294,147.97

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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.