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Finding the Fourth Proportional to 382,969.53, 528,487.65 and 213,203.67

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Solution

The fourth proportional to 382,969.53, 528,487.65 and 213,203.67 is: 294,215.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,969.53 : 528,487.65 = 213,203.67 : x
  2. Step 2: Convert to fraction form
    382,969.53/528,487.65 = 213,203.67/x
  3. Step 3: Cross multiply
    382,969.53x = 528,487.65 × 213,203.67
  4. Step 4: Simplify right side
    382,969.53x = 112,675,506,529.68
  5. Step 5: Solve for x
    x = 112,675,506,529.68/382,969.53
  6. Step 6: Final answer
    x = 294,215.33

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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.