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Finding the Fourth Proportional to 393,700.50, 543,306.69 and 214,852.50

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Solution

The fourth proportional to 393,700.50, 543,306.69 and 214,852.50 is: 296,496.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,700.50 : 543,306.69 = 214,852.50 : x
  2. Step 2: Convert to fraction form
    393,700.50/543,306.69 = 214,852.50/x
  3. Step 3: Cross multiply
    393,700.50x = 543,306.69 × 214,852.50
  4. Step 4: Simplify right side
    393,700.50x = 116,730,800,613.23
  5. Step 5: Solve for x
    x = 116,730,800,613.23/393,700.50
  6. Step 6: Final answer
    x = 296,496.45

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1.5x scale

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.