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Finding the Fourth Proportional to 223,312.80, 334,450.80 and 218,128.80

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Solution

The fourth proportional to 223,312.80, 334,450.80 and 218,128.80 is: 326,686.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,312.80 : 334,450.80 = 218,128.80 : x
  2. Step 2: Convert to fraction form
    223,312.80/334,450.80 = 218,128.80/x
  3. Step 3: Cross multiply
    223,312.80x = 334,450.80 × 218,128.80
  4. Step 4: Simplify right side
    223,312.80x = 72,953,351,663.04
  5. Step 5: Solve for x
    x = 72,953,351,663.04/223,312.80
  6. Step 6: Final answer
    x = 326,686.83

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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.