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Finding the Fourth Proportional to 420,477.62, 630,799.50 and 154,240.60

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Solution

The fourth proportional to 420,477.62, 630,799.50 and 154,240.60 is: 231,391.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,477.62 : 630,799.50 = 154,240.60 : x
  2. Step 2: Convert to fraction form
    420,477.62/630,799.50 = 154,240.60/x
  3. Step 3: Cross multiply
    420,477.62x = 630,799.50 × 154,240.60
  4. Step 4: Simplify right side
    420,477.62x = 97,294,893,359.70
  5. Step 5: Solve for x
    x = 97,294,893,359.70/420,477.62
  6. Step 6: Final answer
    x = 231,391.37

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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.