Home / 372,279.10-513,755.02-211,103.68

Finding the Fourth Proportional to 372,279.10, 513,755.02 and 211,103.68

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Solution

The fourth proportional to 372,279.10, 513,755.02 and 211,103.68 is: 291,328.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,279.10 : 513,755.02 = 211,103.68 : x
  2. Step 2: Convert to fraction form
    372,279.10/513,755.02 = 211,103.68/x
  3. Step 3: Cross multiply
    372,279.10x = 513,755.02 × 211,103.68
  4. Step 4: Simplify right side
    372,279.10x = 108,455,575,340.47
  5. Step 5: Solve for x
    x = 108,455,575,340.47/372,279.10
  6. Step 6: Final answer
    x = 291,328.67

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1.5x scale

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.