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Finding the Fourth Proportional to 264,009.60, 395,917.20 and 86,522.40

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Solution

The fourth proportional to 264,009.60, 395,917.20 and 86,522.40 is: 129,751.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,009.60 : 395,917.20 = 86,522.40 : x
  2. Step 2: Convert to fraction form
    264,009.60/395,917.20 = 86,522.40/x
  3. Step 3: Cross multiply
    264,009.60x = 395,917.20 × 86,522.40
  4. Step 4: Simplify right side
    264,009.60x = 34,255,706,345.28
  5. Step 5: Solve for x
    x = 34,255,706,345.28/264,009.60
  6. Step 6: Final answer
    x = 129,751.75

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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.