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Finding the Fourth Proportional to 328,402.68, 492,798.57 and 138,852.69

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Solution

The fourth proportional to 328,402.68, 492,798.57 and 138,852.69 is: 208,361.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,402.68 : 492,798.57 = 138,852.69 : x
  2. Step 2: Convert to fraction form
    328,402.68/492,798.57 = 138,852.69/x
  3. Step 3: Cross multiply
    328,402.68x = 492,798.57 × 138,852.69
  4. Step 4: Simplify right side
    328,402.68x = 68,426,407,072.65
  5. Step 5: Solve for x
    x = 68,426,407,072.65/328,402.68
  6. Step 6: Final answer
    x = 208,361.29

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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.