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Finding the Fourth Proportional to 419,907.40, 630,517.20 and 242,760.40

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Solution

The fourth proportional to 419,907.40, 630,517.20 and 242,760.40 is: 364,519.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,907.40 : 630,517.20 = 242,760.40 : x
  2. Step 2: Convert to fraction form
    419,907.40/630,517.20 = 242,760.40/x
  3. Step 3: Cross multiply
    419,907.40x = 630,517.20 × 242,760.40
  4. Step 4: Simplify right side
    419,907.40x = 153,064,607,678.88
  5. Step 5: Solve for x
    x = 153,064,607,678.88/419,907.40
  6. Step 6: Final answer
    x = 364,519.91

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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.