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Finding the Fourth Proportional to 420,020.20, 630,030.30 and 301,922.20

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Solution

The fourth proportional to 420,020.20, 630,030.30 and 301,922.20 is: 452,883.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,020.20 : 630,030.30 = 301,922.20 : x
  2. Step 2: Convert to fraction form
    420,020.20/630,030.30 = 301,922.20/x
  3. Step 3: Cross multiply
    420,020.20x = 630,030.30 × 301,922.20
  4. Step 4: Simplify right side
    420,020.20x = 190,220,134,242.66
  5. Step 5: Solve for x
    x = 190,220,134,242.66/420,020.20
  6. Step 6: Final answer
    x = 452,883.30

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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.