Home / 290,510.42-435,790.73-80,148.35

Finding the Fourth Proportional to 290,510.42, 435,790.73 and 80,148.35

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Solution

The fourth proportional to 290,510.42, 435,790.73 and 80,148.35 is: 120,229.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,510.42 : 435,790.73 = 80,148.35 : x
  2. Step 2: Convert to fraction form
    290,510.42/435,790.73 = 80,148.35/x
  3. Step 3: Cross multiply
    290,510.42x = 435,790.73 × 80,148.35
  4. Step 4: Simplify right side
    290,510.42x = 34,927,909,244.64
  5. Step 5: Solve for x
    x = 34,927,909,244.64/290,510.42
  6. Step 6: Final answer
    x = 120,229.46

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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.