Home / 449,319.12-620,037.28-245,330.74

Finding the Fourth Proportional to 449,319.12, 620,037.28 and 245,330.74

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Solution

The fourth proportional to 449,319.12, 620,037.28 and 245,330.74 is: 338,543.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,319.12 : 620,037.28 = 245,330.74 : x
  2. Step 2: Convert to fraction form
    449,319.12/620,037.28 = 245,330.74/x
  3. Step 3: Cross multiply
    449,319.12x = 620,037.28 × 245,330.74
  4. Step 4: Simplify right side
    449,319.12x = 152,114,205,811.70
  5. Step 5: Solve for x
    x = 152,114,205,811.70/449,319.12
  6. Step 6: Final answer
    x = 338,543.81

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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.