Home / 274,923.20-412,384.80-212,638.40

Finding the Fourth Proportional to 274,923.20, 412,384.80 and 212,638.40

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Solution

The fourth proportional to 274,923.20, 412,384.80 and 212,638.40 is: 318,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,923.20 : 412,384.80 = 212,638.40 : x
  2. Step 2: Convert to fraction form
    274,923.20/412,384.80 = 212,638.40/x
  3. Step 3: Cross multiply
    274,923.20x = 412,384.80 × 212,638.40
  4. Step 4: Simplify right side
    274,923.20x = 87,688,844,056.32
  5. Step 5: Solve for x
    x = 87,688,844,056.32/274,923.20
  6. Step 6: Final answer
    x = 318,957.60

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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.