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Finding the Fourth Proportional to 328,905.84, 453,973.84 and 220,022.40

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Solution

The fourth proportional to 328,905.84, 453,973.84 and 220,022.40 is: 303,686.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,905.84 : 453,973.84 = 220,022.40 : x
  2. Step 2: Convert to fraction form
    328,905.84/453,973.84 = 220,022.40/x
  3. Step 3: Cross multiply
    328,905.84x = 453,973.84 × 220,022.40
  4. Step 4: Simplify right side
    328,905.84x = 99,884,413,814.02
  5. Step 5: Solve for x
    x = 99,884,413,814.02/328,905.84
  6. Step 6: Final answer
    x = 303,686.96

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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.