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Finding the Fourth Proportional to 342,308.40, 512,478.45 and 342,308.40

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Solution

The fourth proportional to 342,308.40, 512,478.45 and 342,308.40 is: 512,478.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,308.40 : 512,478.45 = 342,308.40 : x
  2. Step 2: Convert to fraction form
    342,308.40/512,478.45 = 342,308.40/x
  3. Step 3: Cross multiply
    342,308.40x = 512,478.45 × 342,308.40
  4. Step 4: Simplify right side
    342,308.40x = 175,425,678,253.98
  5. Step 5: Solve for x
    x = 175,425,678,253.98/342,308.40
  6. Step 6: Final answer
    x = 512,478.45

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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.