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Finding the Fourth Proportional to 505,762.60, 758,643.90 and 131,785.60

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Solution

The fourth proportional to 505,762.60, 758,643.90 and 131,785.60 is: 197,678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,762.60 : 758,643.90 = 131,785.60 : x
  2. Step 2: Convert to fraction form
    505,762.60/758,643.90 = 131,785.60/x
  3. Step 3: Cross multiply
    505,762.60x = 758,643.90 × 131,785.60
  4. Step 4: Simplify right side
    505,762.60x = 99,978,341,547.84
  5. Step 5: Solve for x
    x = 99,978,341,547.84/505,762.60
  6. Step 6: Final answer
    x = 197,678.40

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Similar ratio
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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.