Home / 290,271.09-434,743.73-138,574.87

Finding the Fourth Proportional to 290,271.09, 434,743.73 and 138,574.87

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Solution

The fourth proportional to 290,271.09, 434,743.73 and 138,574.87 is: 207,545.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,271.09 : 434,743.73 = 138,574.87 : x
  2. Step 2: Convert to fraction form
    290,271.09/434,743.73 = 138,574.87/x
  3. Step 3: Cross multiply
    290,271.09x = 434,743.73 × 138,574.87
  4. Step 4: Simplify right side
    290,271.09x = 60,244,555,348.41
  5. Step 5: Solve for x
    x = 60,244,555,348.41/290,271.09
  6. Step 6: Final answer
    x = 207,545.84

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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.