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Finding the Fourth Proportional to 535,028.55, 738,319.61 and 290,008.05

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Solution

The fourth proportional to 535,028.55, 738,319.61 and 290,008.05 is: 400,200.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,028.55 : 738,319.61 = 290,008.05 : x
  2. Step 2: Convert to fraction form
    535,028.55/738,319.61 = 290,008.05/x
  3. Step 3: Cross multiply
    535,028.55x = 738,319.61 × 290,008.05
  4. Step 4: Simplify right side
    535,028.55x = 214,118,628,922.82
  5. Step 5: Solve for x
    x = 214,118,628,922.82/535,028.55
  6. Step 6: Final answer
    x = 400,200.38

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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.