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Finding the Fourth Proportional to 383,090.48, 528,665.64 and 213,330.68

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Solution

The fourth proportional to 383,090.48, 528,665.64 and 213,330.68 is: 294,396.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,090.48 : 528,665.64 = 213,330.68 : x
  2. Step 2: Convert to fraction form
    383,090.48/528,665.64 = 213,330.68/x
  3. Step 3: Cross multiply
    383,090.48x = 528,665.64 × 213,330.68
  4. Step 4: Simplify right side
    383,090.48x = 112,780,600,473.84
  5. Step 5: Solve for x
    x = 112,780,600,473.84/383,090.48
  6. Step 6: Final answer
    x = 294,396.77

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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.