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Finding the Fourth Proportional to 304,930.80, 457,313.28 and 127,400.64

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Solution

The fourth proportional to 304,930.80, 457,313.28 and 127,400.64 is: 191,066.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,930.80 : 457,313.28 = 127,400.64 : x
  2. Step 2: Convert to fraction form
    304,930.80/457,313.28 = 127,400.64/x
  3. Step 3: Cross multiply
    304,930.80x = 457,313.28 × 127,400.64
  4. Step 4: Simplify right side
    304,930.80x = 58,262,004,552.50
  5. Step 5: Solve for x
    x = 58,262,004,552.50/304,930.80
  6. Step 6: Final answer
    x = 191,066.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.