Home / 420,856.90-580,631.61-248,738.74

Finding the Fourth Proportional to 420,856.90, 580,631.61 and 248,738.74

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Solution

The fourth proportional to 420,856.90, 580,631.61 and 248,738.74 is: 343,170.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,856.90 : 580,631.61 = 248,738.74 : x
  2. Step 2: Convert to fraction form
    420,856.90/580,631.61 = 248,738.74/x
  3. Step 3: Cross multiply
    420,856.90x = 580,631.61 × 248,738.74
  4. Step 4: Simplify right side
    420,856.90x = 144,425,575,075.57
  5. Step 5: Solve for x
    x = 144,425,575,075.57/420,856.90
  6. Step 6: Final answer
    x = 343,170.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.