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Finding the Fourth Proportional to 208,157.58, 287,258.16 and 112,664.22

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Solution

The fourth proportional to 208,157.58, 287,258.16 and 112,664.22 is: 155,477.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,157.58 : 287,258.16 = 112,664.22 : x
  2. Step 2: Convert to fraction form
    208,157.58/287,258.16 = 112,664.22/x
  3. Step 3: Cross multiply
    208,157.58x = 287,258.16 × 112,664.22
  4. Step 4: Simplify right side
    208,157.58x = 32,363,716,535.04
  5. Step 5: Solve for x
    x = 32,363,716,535.04/208,157.58
  6. Step 6: Final answer
    x = 155,477.00

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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.