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Finding the Fourth Proportional to 378,058.80, 521,730.54 and 232,809.60

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Solution

The fourth proportional to 378,058.80, 521,730.54 and 232,809.60 is: 321,283.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,058.80 : 521,730.54 = 232,809.60 : x
  2. Step 2: Convert to fraction form
    378,058.80/521,730.54 = 232,809.60/x
  3. Step 3: Cross multiply
    378,058.80x = 521,730.54 × 232,809.60
  4. Step 4: Simplify right side
    378,058.80x = 121,463,878,325.18
  5. Step 5: Solve for x
    x = 121,463,878,325.18/378,058.80
  6. Step 6: Final answer
    x = 321,283.03

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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.