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Finding the Fourth Proportional to 328,666.83, 492,950.85 and 103,998.07

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Solution

The fourth proportional to 328,666.83, 492,950.85 and 103,998.07 is: 155,981.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,666.83 : 492,950.85 = 103,998.07 : x
  2. Step 2: Convert to fraction form
    328,666.83/492,950.85 = 103,998.07/x
  3. Step 3: Cross multiply
    328,666.83x = 492,950.85 × 103,998.07
  4. Step 4: Simplify right side
    328,666.83x = 51,265,935,772.48
  5. Step 5: Solve for x
    x = 51,265,935,772.48/328,666.83
  6. Step 6: Final answer
    x = 155,981.47

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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.