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Finding the Fourth Proportional to 287,226.40, 430,839.60 and 162,810.40

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Solution

The fourth proportional to 287,226.40, 430,839.60 and 162,810.40 is: 244,215.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,226.40 : 430,839.60 = 162,810.40 : x
  2. Step 2: Convert to fraction form
    287,226.40/430,839.60 = 162,810.40/x
  3. Step 3: Cross multiply
    287,226.40x = 430,839.60 × 162,810.40
  4. Step 4: Simplify right side
    287,226.40x = 70,145,167,611.84
  5. Step 5: Solve for x
    x = 70,145,167,611.84/287,226.40
  6. Step 6: Final answer
    x = 244,215.60

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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.