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Finding the Fourth Proportional to 331,387.51, 457,314.78 and 180,484.51

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Solution

The fourth proportional to 331,387.51, 457,314.78 and 180,484.51 is: 249,068.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,387.51 : 457,314.78 = 180,484.51 : x
  2. Step 2: Convert to fraction form
    331,387.51/457,314.78 = 180,484.51/x
  3. Step 3: Cross multiply
    331,387.51x = 457,314.78 × 180,484.51
  4. Step 4: Simplify right side
    331,387.51x = 82,538,233,984.06
  5. Step 5: Solve for x
    x = 82,538,233,984.06/331,387.51
  6. Step 6: Final answer
    x = 249,068.63

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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.