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Finding the Fourth Proportional to 351,268.89, 484,762.80 and 215,276.58

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Solution

The fourth proportional to 351,268.89, 484,762.80 and 215,276.58 is: 297,088.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,268.89 : 484,762.80 = 215,276.58 : x
  2. Step 2: Convert to fraction form
    351,268.89/484,762.80 = 215,276.58/x
  3. Step 3: Cross multiply
    351,268.89x = 484,762.80 × 215,276.58
  4. Step 4: Simplify right side
    351,268.89x = 104,358,077,695.22
  5. Step 5: Solve for x
    x = 104,358,077,695.22/351,268.89
  6. Step 6: Final answer
    x = 297,088.87

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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.