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Finding the Fourth Proportional to 378,330.48, 522,003.24 and 249,254.64

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Solution

The fourth proportional to 378,330.48, 522,003.24 and 249,254.64 is: 343,910.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,330.48 : 522,003.24 = 249,254.64 : x
  2. Step 2: Convert to fraction form
    378,330.48/522,003.24 = 249,254.64/x
  3. Step 3: Cross multiply
    378,330.48x = 522,003.24 × 249,254.64
  4. Step 4: Simplify right side
    378,330.48x = 130,111,729,665.03
  5. Step 5: Solve for x
    x = 130,111,729,665.03/378,330.48
  6. Step 6: Final answer
    x = 343,910.25

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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.