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Finding the Fourth Proportional to 341,845.80, 512,423.10 and 154,991.40

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Solution

The fourth proportional to 341,845.80, 512,423.10 and 154,991.40 is: 232,330.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,845.80 : 512,423.10 = 154,991.40 : x
  2. Step 2: Convert to fraction form
    341,845.80/512,423.10 = 154,991.40/x
  3. Step 3: Cross multiply
    341,845.80x = 512,423.10 × 154,991.40
  4. Step 4: Simplify right side
    341,845.80x = 79,421,173,661.34
  5. Step 5: Solve for x
    x = 79,421,173,661.34/341,845.80
  6. Step 6: Final answer
    x = 232,330.41

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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.