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Finding the Fourth Proportional to 342,000.30, 479,981.40 and 342,000.30

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Solution

The fourth proportional to 342,000.30, 479,981.40 and 342,000.30 is: 479,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,000.30 : 479,981.40 = 342,000.30 : x
  2. Step 2: Convert to fraction form
    342,000.30/479,981.40 = 342,000.30/x
  3. Step 3: Cross multiply
    342,000.30x = 479,981.40 × 342,000.30
  4. Step 4: Simplify right side
    342,000.30x = 164,153,782,794.42
  5. Step 5: Solve for x
    x = 164,153,782,794.42/342,000.30
  6. Step 6: Final answer
    x = 479,981.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.