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Finding the Fourth Proportional to 630,218.40, 943,304.40 and 330,271.20

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Solution

The fourth proportional to 630,218.40, 943,304.40 and 330,271.20 is: 494,346.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,218.40 : 943,304.40 = 330,271.20 : x
  2. Step 2: Convert to fraction form
    630,218.40/943,304.40 = 330,271.20/x
  3. Step 3: Cross multiply
    630,218.40x = 943,304.40 × 330,271.20
  4. Step 4: Simplify right side
    630,218.40x = 311,546,276,153.28
  5. Step 5: Solve for x
    x = 311,546,276,153.28/630,218.40
  6. Step 6: Final answer
    x = 494,346.53

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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.