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Finding the Fourth Proportional to 369,491.37, 509,854.75 and 208,336.81

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Solution

The fourth proportional to 369,491.37, 509,854.75 and 208,336.81 is: 287,480.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,491.37 : 509,854.75 = 208,336.81 : x
  2. Step 2: Convert to fraction form
    369,491.37/509,854.75 = 208,336.81/x
  3. Step 3: Cross multiply
    369,491.37x = 509,854.75 × 208,336.81
  4. Step 4: Simplify right side
    369,491.37x = 106,221,512,178.35
  5. Step 5: Solve for x
    x = 106,221,512,178.35/369,491.37
  6. Step 6: Final answer
    x = 287,480.36

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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.