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Finding the Fourth Proportional to 571,036.40, 856,165.80 and 215,997.20

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Solution

The fourth proportional to 571,036.40, 856,165.80 and 215,997.20 is: 323,848.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,036.40 : 856,165.80 = 215,997.20 : x
  2. Step 2: Convert to fraction form
    571,036.40/856,165.80 = 215,997.20/x
  3. Step 3: Cross multiply
    571,036.40x = 856,165.80 × 215,997.20
  4. Step 4: Simplify right side
    571,036.40x = 184,929,415,535.76
  5. Step 5: Solve for x
    x = 184,929,415,535.76/571,036.40
  6. Step 6: Final answer
    x = 323,848.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.