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Finding the Fourth Proportional to 341,999.70, 512,999.55 and 288,855.60

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Solution

The fourth proportional to 341,999.70, 512,999.55 and 288,855.60 is: 433,283.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,999.70 : 512,999.55 = 288,855.60 : x
  2. Step 2: Convert to fraction form
    341,999.70/512,999.55 = 288,855.60/x
  3. Step 3: Cross multiply
    341,999.70x = 512,999.55 × 288,855.60
  4. Step 4: Simplify right side
    341,999.70x = 148,182,792,814.98
  5. Step 5: Solve for x
    x = 148,182,792,814.98/341,999.70
  6. Step 6: Final answer
    x = 433,283.40

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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.