Home / 387,528.25-534,839.10-217,762.39

Finding the Fourth Proportional to 387,528.25, 534,839.10 and 217,762.39

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Solution

The fourth proportional to 387,528.25, 534,839.10 and 217,762.39 is: 300,540.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,528.25 : 534,839.10 = 217,762.39 : x
  2. Step 2: Convert to fraction form
    387,528.25/534,839.10 = 217,762.39/x
  3. Step 3: Cross multiply
    387,528.25x = 534,839.10 × 217,762.39
  4. Step 4: Simplify right side
    387,528.25x = 116,467,840,681.45
  5. Step 5: Solve for x
    x = 116,467,840,681.45/387,528.25
  6. Step 6: Final answer
    x = 300,540.26

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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.