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Finding the Fourth Proportional to 368,221.12, 507,830.40 and 253,682.56

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Solution

The fourth proportional to 368,221.12, 507,830.40 and 253,682.56 is: 349,865.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,221.12 : 507,830.40 = 253,682.56 : x
  2. Step 2: Convert to fraction form
    368,221.12/507,830.40 = 253,682.56/x
  3. Step 3: Cross multiply
    368,221.12x = 507,830.40 × 253,682.56
  4. Step 4: Simplify right side
    368,221.12x = 128,827,715,917.82
  5. Step 5: Solve for x
    x = 128,827,715,917.82/368,221.12
  6. Step 6: Final answer
    x = 349,865.09

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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.