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Finding the Fourth Proportional to 208,211, 287,331.18 and 118,785.08

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Solution

The fourth proportional to 208,211, 287,331.18 and 118,785.08 is: 163,923.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,211 : 287,331.18 = 118,785.08 : x
  2. Step 2: Convert to fraction form
    208,211/287,331.18 = 118,785.08/x
  3. Step 3: Cross multiply
    208,211x = 287,331.18 × 118,785.08
  4. Step 4: Simplify right side
    208,211x = 34,130,657,202.79
  5. Step 5: Solve for x
    x = 34,130,657,202.79/208,211
  6. Step 6: Final answer
    x = 163,923.41

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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.