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Finding the Fourth Proportional to 342,128.40, 513,184.50 and 92,810.40

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Solution

The fourth proportional to 342,128.40, 513,184.50 and 92,810.40 is: 139,213.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,128.40 : 513,184.50 = 92,810.40 : x
  2. Step 2: Convert to fraction form
    342,128.40/513,184.50 = 92,810.40/x
  3. Step 3: Cross multiply
    342,128.40x = 513,184.50 × 92,810.40
  4. Step 4: Simplify right side
    342,128.40x = 47,628,858,718.80
  5. Step 5: Solve for x
    x = 47,628,858,718.80/342,128.40
  6. Step 6: Final answer
    x = 139,213.40

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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.