Home / 387,330.60-534,501.96-215,259.30

Finding the Fourth Proportional to 387,330.60, 534,501.96 and 215,259.30

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Solution

The fourth proportional to 387,330.60, 534,501.96 and 215,259.30 is: 297,049.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,330.60 : 534,501.96 = 215,259.30 : x
  2. Step 2: Convert to fraction form
    387,330.60/534,501.96 = 215,259.30/x
  3. Step 3: Cross multiply
    387,330.60x = 534,501.96 × 215,259.30
  4. Step 4: Simplify right side
    387,330.60x = 115,056,517,758.23
  5. Step 5: Solve for x
    x = 115,056,517,758.23/387,330.60
  6. Step 6: Final answer
    x = 297,049.90

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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.