Home / 280,291.03-420,503.37-90,751.46

Finding the Fourth Proportional to 280,291.03, 420,503.37 and 90,751.46

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Solution

The fourth proportional to 280,291.03, 420,503.37 and 90,751.46 is: 136,148.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,291.03 : 420,503.37 = 90,751.46 : x
  2. Step 2: Convert to fraction form
    280,291.03/420,503.37 = 90,751.46/x
  3. Step 3: Cross multiply
    280,291.03x = 420,503.37 × 90,751.46
  4. Step 4: Simplify right side
    280,291.03x = 38,161,292,546.46
  5. Step 5: Solve for x
    x = 38,161,292,546.46/280,291.03
  6. Step 6: Final answer
    x = 136,148.82

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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.