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Finding the Fourth Proportional to 495,840.80, 744,452.40 and 309,216.80

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Solution

The fourth proportional to 495,840.80, 744,452.40 and 309,216.80 is: 464,256.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,840.80 : 744,452.40 = 309,216.80 : x
  2. Step 2: Convert to fraction form
    495,840.80/744,452.40 = 309,216.80/x
  3. Step 3: Cross multiply
    495,840.80x = 744,452.40 × 309,216.80
  4. Step 4: Simplify right side
    495,840.80x = 230,197,188,880.32
  5. Step 5: Solve for x
    x = 230,197,188,880.32/495,840.80
  6. Step 6: Final answer
    x = 464,256.25

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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.