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Finding the Fourth Proportional to 378,325.34, 522,090.56 and 208,555.74

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Solution

The fourth proportional to 378,325.34, 522,090.56 and 208,555.74 is: 287,807.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,325.34 : 522,090.56 = 208,555.74 : x
  2. Step 2: Convert to fraction form
    378,325.34/522,090.56 = 208,555.74/x
  3. Step 3: Cross multiply
    378,325.34x = 522,090.56 × 208,555.74
  4. Step 4: Simplify right side
    378,325.34x = 108,884,983,087.81
  5. Step 5: Solve for x
    x = 108,884,983,087.81/378,325.34
  6. Step 6: Final answer
    x = 287,807.80

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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.