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Finding the Fourth Proportional to 208,725.84, 287,931.36 and 148,320.88

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Solution

The fourth proportional to 208,725.84, 287,931.36 and 148,320.88 is: 204,604.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,725.84 : 287,931.36 = 148,320.88 : x
  2. Step 2: Convert to fraction form
    208,725.84/287,931.36 = 148,320.88/x
  3. Step 3: Cross multiply
    208,725.84x = 287,931.36 × 148,320.88
  4. Step 4: Simplify right side
    208,725.84x = 42,706,232,694.80
  5. Step 5: Solve for x
    x = 42,706,232,694.80/208,725.84
  6. Step 6: Final answer
    x = 204,604.44

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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.