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Finding the Fourth Proportional to 368,763.12, 508,942.44 and 215,848.08

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Solution

The fourth proportional to 368,763.12, 508,942.44 and 215,848.08 is: 297,899.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,763.12 : 508,942.44 = 215,848.08 : x
  2. Step 2: Convert to fraction form
    368,763.12/508,942.44 = 215,848.08/x
  3. Step 3: Cross multiply
    368,763.12x = 508,942.44 × 215,848.08
  4. Step 4: Simplify right side
    368,763.12x = 109,854,248,504.52
  5. Step 5: Solve for x
    x = 109,854,248,504.52/368,763.12
  6. Step 6: Final answer
    x = 297,899.23

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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.