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Finding the Fourth Proportional to 387,683.52, 535,003.58 and 215,597.73

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Solution

The fourth proportional to 387,683.52, 535,003.58 and 215,597.73 is: 297,525.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,683.52 : 535,003.58 = 215,597.73 : x
  2. Step 2: Convert to fraction form
    387,683.52/535,003.58 = 215,597.73/x
  3. Step 3: Cross multiply
    387,683.52x = 535,003.58 × 215,597.73
  4. Step 4: Simplify right side
    387,683.52x = 115,345,559,935.13
  5. Step 5: Solve for x
    x = 115,345,559,935.13/387,683.52
  6. Step 6: Final answer
    x = 297,525.06

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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.