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Finding the Fourth Proportional to 424,271.94, 585,621.78 and 279,189.60

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Solution

The fourth proportional to 424,271.94, 585,621.78 and 279,189.60 is: 385,364.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,271.94 : 585,621.78 = 279,189.60 : x
  2. Step 2: Convert to fraction form
    424,271.94/585,621.78 = 279,189.60/x
  3. Step 3: Cross multiply
    424,271.94x = 585,621.78 × 279,189.60
  4. Step 4: Simplify right side
    424,271.94x = 163,499,510,509.49
  5. Step 5: Solve for x
    x = 163,499,510,509.49/424,271.94
  6. Step 6: Final answer
    x = 385,364.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.