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Finding the Fourth Proportional to 304,734.80, 457,102.20 and 290,219.60

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Solution

The fourth proportional to 304,734.80, 457,102.20 and 290,219.60 is: 435,329.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,734.80 : 457,102.20 = 290,219.60 : x
  2. Step 2: Convert to fraction form
    304,734.80/457,102.20 = 290,219.60/x
  3. Step 3: Cross multiply
    304,734.80x = 457,102.20 × 290,219.60
  4. Step 4: Simplify right side
    304,734.80x = 132,660,017,643.12
  5. Step 5: Solve for x
    x = 132,660,017,643.12/304,734.80
  6. Step 6: Final answer
    x = 435,329.40

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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.