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Finding the Fourth Proportional to 369,473.78, 509,879.49 and 216,475.36

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Solution

The fourth proportional to 369,473.78, 509,879.49 and 216,475.36 is: 298,739.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,473.78 : 509,879.49 = 216,475.36 : x
  2. Step 2: Convert to fraction form
    369,473.78/509,879.49 = 216,475.36/x
  3. Step 3: Cross multiply
    369,473.78x = 509,879.49 × 216,475.36
  4. Step 4: Simplify right side
    369,473.78x = 110,376,346,154.37
  5. Step 5: Solve for x
    x = 110,376,346,154.37/369,473.78
  6. Step 6: Final answer
    x = 298,739.32

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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.