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Finding the Fourth Proportional to 313,090.80, 469,117.80 and 266,434.80

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Solution

The fourth proportional to 313,090.80, 469,117.80 and 266,434.80 is: 399,211.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,090.80 : 469,117.80 = 266,434.80 : x
  2. Step 2: Convert to fraction form
    313,090.80/469,117.80 = 266,434.80/x
  3. Step 3: Cross multiply
    313,090.80x = 469,117.80 × 266,434.80
  4. Step 4: Simplify right side
    313,090.80x = 124,989,307,219.44
  5. Step 5: Solve for x
    x = 124,989,307,219.44/313,090.80
  6. Step 6: Final answer
    x = 399,211.05

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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.