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Finding the Fourth Proportional to 215,246.80, 322,870.20 and 155,803.60

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Solution

The fourth proportional to 215,246.80, 322,870.20 and 155,803.60 is: 233,705.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,246.80 : 322,870.20 = 155,803.60 : x
  2. Step 2: Convert to fraction form
    215,246.80/322,870.20 = 155,803.60/x
  3. Step 3: Cross multiply
    215,246.80x = 322,870.20 × 155,803.60
  4. Step 4: Simplify right side
    215,246.80x = 50,304,339,492.72
  5. Step 5: Solve for x
    x = 50,304,339,492.72/215,246.80
  6. Step 6: Final answer
    x = 233,705.40

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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.