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Finding the Fourth Proportional to 215,541.83, 323,312.72 and 65,782.89

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Solution

The fourth proportional to 215,541.83, 323,312.72 and 65,782.89 is: 98,674.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,541.83 : 323,312.72 = 65,782.89 : x
  2. Step 2: Convert to fraction form
    215,541.83/323,312.72 = 65,782.89/x
  3. Step 3: Cross multiply
    215,541.83x = 323,312.72 × 65,782.89
  4. Step 4: Simplify right side
    215,541.83x = 21,268,444,766.45
  5. Step 5: Solve for x
    x = 21,268,444,766.45/215,541.83
  6. Step 6: Final answer
    x = 98,674.32

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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.