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Finding the Fourth Proportional to 310,574.40, 465,861.60 and 212,270.40

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Solution

The fourth proportional to 310,574.40, 465,861.60 and 212,270.40 is: 318,405.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,574.40 : 465,861.60 = 212,270.40 : x
  2. Step 2: Convert to fraction form
    310,574.40/465,861.60 = 212,270.40/x
  3. Step 3: Cross multiply
    310,574.40x = 465,861.60 × 212,270.40
  4. Step 4: Simplify right side
    310,574.40x = 98,888,628,176.64
  5. Step 5: Solve for x
    x = 98,888,628,176.64/310,574.40
  6. Step 6: Final answer
    x = 318,405.60

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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.