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Finding the Fourth Proportional to 342,140.80, 512,622.06 and 242,136.40

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Solution

The fourth proportional to 342,140.80, 512,622.06 and 242,136.40 is: 362,787.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,140.80 : 512,622.06 = 242,136.40 : x
  2. Step 2: Convert to fraction form
    342,140.80/512,622.06 = 242,136.40/x
  3. Step 3: Cross multiply
    342,140.80x = 512,622.06 × 242,136.40
  4. Step 4: Simplify right side
    342,140.80x = 124,124,460,168.98
  5. Step 5: Solve for x
    x = 124,124,460,168.98/342,140.80
  6. Step 6: Final answer
    x = 362,787.66

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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.