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Finding the Fourth Proportional to 342,130.56, 513,064.64 and 117,449.12

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Solution

The fourth proportional to 342,130.56, 513,064.64 and 117,449.12 is: 176,128.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,130.56 : 513,064.64 = 117,449.12 : x
  2. Step 2: Convert to fraction form
    342,130.56/513,064.64 = 117,449.12/x
  3. Step 3: Cross multiply
    342,130.56x = 513,064.64 × 117,449.12
  4. Step 4: Simplify right side
    342,130.56x = 60,258,990,471.12
  5. Step 5: Solve for x
    x = 60,258,990,471.12/342,130.56
  6. Step 6: Final answer
    x = 176,128.64

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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.