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Finding the Fourth Proportional to 342,263.01, 512,343.56 and 215,308.83

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Solution

The fourth proportional to 342,263.01, 512,343.56 and 215,308.83 is: 322,302.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,263.01 : 512,343.56 = 215,308.83 : x
  2. Step 2: Convert to fraction form
    342,263.01/512,343.56 = 215,308.83/x
  3. Step 3: Cross multiply
    342,263.01x = 512,343.56 × 215,308.83
  4. Step 4: Simplify right side
    342,263.01x = 110,312,094,113.79
  5. Step 5: Solve for x
    x = 110,312,094,113.79/342,263.01
  6. Step 6: Final answer
    x = 322,302.12

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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.