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Finding the Fourth Proportional to 378,803.31, 565,100.21 and 368,506.59

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Solution

The fourth proportional to 378,803.31, 565,100.21 and 368,506.59 is: 549,739.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,803.31 : 565,100.21 = 368,506.59 : x
  2. Step 2: Convert to fraction form
    378,803.31/565,100.21 = 368,506.59/x
  3. Step 3: Cross multiply
    378,803.31x = 565,100.21 × 368,506.59
  4. Step 4: Simplify right side
    378,803.31x = 208,243,149,552.85
  5. Step 5: Solve for x
    x = 208,243,149,552.85/378,803.31
  6. Step 6: Final answer
    x = 549,739.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.