Home / 280,279.13-420,422.54-93,290.63

Finding the Fourth Proportional to 280,279.13, 420,422.54 and 93,290.63

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Solution

The fourth proportional to 280,279.13, 420,422.54 and 93,290.63 is: 139,937.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,279.13 : 420,422.54 = 93,290.63 : x
  2. Step 2: Convert to fraction form
    280,279.13/420,422.54 = 93,290.63/x
  3. Step 3: Cross multiply
    280,279.13x = 420,422.54 × 93,290.63
  4. Step 4: Simplify right side
    280,279.13x = 39,221,481,054.23
  5. Step 5: Solve for x
    x = 39,221,481,054.23/280,279.13
  6. Step 6: Final answer
    x = 139,937.22

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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.