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Finding the Fourth Proportional to 282,740.81, 424,110.93 and 72,378.41

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Solution

The fourth proportional to 282,740.81, 424,110.93 and 72,378.41 is: 108,567.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,740.81 : 424,110.93 = 72,378.41 : x
  2. Step 2: Convert to fraction form
    282,740.81/424,110.93 = 72,378.41/x
  3. Step 3: Cross multiply
    282,740.81x = 424,110.93 × 72,378.41
  4. Step 4: Simplify right side
    282,740.81x = 30,696,472,656.47
  5. Step 5: Solve for x
    x = 30,696,472,656.47/282,740.81
  6. Step 6: Final answer
    x = 108,567.54

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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.