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Finding the Fourth Proportional to 543,012.80, 749,346.21 and 301,290.17

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Solution

The fourth proportional to 543,012.80, 749,346.21 and 301,290.17 is: 415,774.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,012.80 : 749,346.21 = 301,290.17 : x
  2. Step 2: Convert to fraction form
    543,012.80/749,346.21 = 301,290.17/x
  3. Step 3: Cross multiply
    543,012.80x = 749,346.21 × 301,290.17
  4. Step 4: Simplify right side
    543,012.80x = 225,770,643,253.03
  5. Step 5: Solve for x
    x = 225,770,643,253.03/543,012.80
  6. Step 6: Final answer
    x = 415,774.08

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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.