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Finding the Fourth Proportional to 387,017.56, 534,068.64 and 214,944.40

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Solution

The fourth proportional to 387,017.56, 534,068.64 and 214,944.40 is: 296,614.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,017.56 : 534,068.64 = 214,944.40 : x
  2. Step 2: Convert to fraction form
    387,017.56/534,068.64 = 214,944.40/x
  3. Step 3: Cross multiply
    387,017.56x = 534,068.64 × 214,944.40
  4. Step 4: Simplify right side
    387,017.56x = 114,795,063,383.62
  5. Step 5: Solve for x
    x = 114,795,063,383.62/387,017.56
  6. Step 6: Final answer
    x = 296,614.61

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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.