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Finding the Fourth Proportional to 603,320.40, 905,308.65 and 248,370.30

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Solution

The fourth proportional to 603,320.40, 905,308.65 and 248,370.30 is: 372,690.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,320.40 : 905,308.65 = 248,370.30 : x
  2. Step 2: Convert to fraction form
    603,320.40/905,308.65 = 248,370.30/x
  3. Step 3: Cross multiply
    603,320.40x = 905,308.65 × 248,370.30
  4. Step 4: Simplify right side
    603,320.40x = 224,851,780,993.10
  5. Step 5: Solve for x
    x = 224,851,780,993.10/603,320.40
  6. Step 6: Final answer
    x = 372,690.50

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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.