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Finding the Fourth Proportional to 579,993.40, 869,298.90 and 243,033.40

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Solution

The fourth proportional to 579,993.40, 869,298.90 and 243,033.40 is: 364,260.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,993.40 : 869,298.90 = 243,033.40 : x
  2. Step 2: Convert to fraction form
    579,993.40/869,298.90 = 243,033.40/x
  3. Step 3: Cross multiply
    579,993.40x = 869,298.90 × 243,033.40
  4. Step 4: Simplify right side
    579,993.40x = 211,268,667,283.26
  5. Step 5: Solve for x
    x = 211,268,667,283.26/579,993.40
  6. Step 6: Final answer
    x = 364,260.47

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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.