Home / 387,435.64-534,674.94-217,666.36

Finding the Fourth Proportional to 387,435.64, 534,674.94 and 217,666.36

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Solution

The fourth proportional to 387,435.64, 534,674.94 and 217,666.36 is: 300,387.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,435.64 : 534,674.94 = 217,666.36 : x
  2. Step 2: Convert to fraction form
    387,435.64/534,674.94 = 217,666.36/x
  3. Step 3: Cross multiply
    387,435.64x = 534,674.94 × 217,666.36
  4. Step 4: Simplify right side
    387,435.64x = 116,380,747,973.02
  5. Step 5: Solve for x
    x = 116,380,747,973.02/387,435.64
  6. Step 6: Final answer
    x = 300,387.31

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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.