Home / 378,349.16-522,125.48-208,589.36

Finding the Fourth Proportional to 378,349.16, 522,125.48 and 208,589.36

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Solution

The fourth proportional to 378,349.16, 522,125.48 and 208,589.36 is: 287,855.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,349.16 : 522,125.48 = 208,589.36 : x
  2. Step 2: Convert to fraction form
    378,349.16/522,125.48 = 208,589.36/x
  3. Step 3: Cross multiply
    378,349.16x = 522,125.48 × 208,589.36
  4. Step 4: Simplify right side
    378,349.16x = 108,909,818,669.95
  5. Step 5: Solve for x
    x = 108,909,818,669.95/378,349.16
  6. Step 6: Final answer
    x = 287,855.32

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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.