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Finding the Fourth Proportional to 328,866.50, 453,527.77 and 218,289.58

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Solution

The fourth proportional to 328,866.50, 453,527.77 and 218,289.58 is: 301,035.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,866.50 : 453,527.77 = 218,289.58 : x
  2. Step 2: Convert to fraction form
    328,866.50/453,527.77 = 218,289.58/x
  3. Step 3: Cross multiply
    328,866.50x = 453,527.77 × 218,289.58
  4. Step 4: Simplify right side
    328,866.50x = 99,000,386,431.64
  5. Step 5: Solve for x
    x = 99,000,386,431.64/328,866.50
  6. Step 6: Final answer
    x = 301,035.19

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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.