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Finding the Fourth Proportional to 342,099.20, 513,148.80 and 105,514.40

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Solution

The fourth proportional to 342,099.20, 513,148.80 and 105,514.40 is: 158,271.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,099.20 : 513,148.80 = 105,514.40 : x
  2. Step 2: Convert to fraction form
    342,099.20/513,148.80 = 105,514.40/x
  3. Step 3: Cross multiply
    342,099.20x = 513,148.80 × 105,514.40
  4. Step 4: Simplify right side
    342,099.20x = 54,144,587,742.72
  5. Step 5: Solve for x
    x = 54,144,587,742.72/342,099.20
  6. Step 6: Final answer
    x = 158,271.60

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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.