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Finding the Fourth Proportional to 315,506.80, 470,845.53 and 281,848.87

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Solution

The fourth proportional to 315,506.80, 470,845.53 and 281,848.87 is: 420,616.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,506.80 : 470,845.53 = 281,848.87 : x
  2. Step 2: Convert to fraction form
    315,506.80/470,845.53 = 281,848.87/x
  3. Step 3: Cross multiply
    315,506.80x = 470,845.53 × 281,848.87
  4. Step 4: Simplify right side
    315,506.80x = 132,707,280,575.05
  5. Step 5: Solve for x
    x = 132,707,280,575.05/315,506.80
  6. Step 6: Final answer
    x = 420,616.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.