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Finding the Fourth Proportional to 373,205.21, 514,706.27 and 315,345.42

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Solution

The fourth proportional to 373,205.21, 514,706.27 and 315,345.42 is: 434,908.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,205.21 : 514,706.27 = 315,345.42 : x
  2. Step 2: Convert to fraction form
    373,205.21/514,706.27 = 315,345.42/x
  3. Step 3: Cross multiply
    373,205.21x = 514,706.27 × 315,345.42
  4. Step 4: Simplify right side
    373,205.21x = 162,310,263,313.06
  5. Step 5: Solve for x
    x = 162,310,263,313.06/373,205.21
  6. Step 6: Final answer
    x = 434,908.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.