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Finding the Fourth Proportional to 289,683.93, 434,526.71 and 90,033.51

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Solution

The fourth proportional to 289,683.93, 434,526.71 and 90,033.51 is: 135,050.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,683.93 : 434,526.71 = 90,033.51 : x
  2. Step 2: Convert to fraction form
    289,683.93/434,526.71 = 90,033.51/x
  3. Step 3: Cross multiply
    289,683.93x = 434,526.71 × 90,033.51
  4. Step 4: Simplify right side
    289,683.93x = 39,121,964,890.05
  5. Step 5: Solve for x
    x = 39,121,964,890.05/289,683.93
  6. Step 6: Final answer
    x = 135,050.52

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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.