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Finding the Fourth Proportional to 301,257.80, 451,886.70 and 90,868.40

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Solution

The fourth proportional to 301,257.80, 451,886.70 and 90,868.40 is: 136,302.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,257.80 : 451,886.70 = 90,868.40 : x
  2. Step 2: Convert to fraction form
    301,257.80/451,886.70 = 90,868.40/x
  3. Step 3: Cross multiply
    301,257.80x = 451,886.70 × 90,868.40
  4. Step 4: Simplify right side
    301,257.80x = 41,062,221,410.28
  5. Step 5: Solve for x
    x = 41,062,221,410.28/301,257.80
  6. Step 6: Final answer
    x = 136,302.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.