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Finding the Fourth Proportional to 372,460.80, 514,007.56 and 211,322.64

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Solution

The fourth proportional to 372,460.80, 514,007.56 and 211,322.64 is: 291,631.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,460.80 : 514,007.56 = 211,322.64 : x
  2. Step 2: Convert to fraction form
    372,460.80/514,007.56 = 211,322.64/x
  3. Step 3: Cross multiply
    372,460.80x = 514,007.56 × 211,322.64
  4. Step 4: Simplify right side
    372,460.80x = 108,621,434,559.16
  5. Step 5: Solve for x
    x = 108,621,434,559.16/372,460.80
  6. Step 6: Final answer
    x = 291,631.86

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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.