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Finding the Fourth Proportional to 539,299.55, 744,208.36 and 309,695.23

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Solution

The fourth proportional to 539,299.55, 744,208.36 and 309,695.23 is: 427,365.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,299.55 : 744,208.36 = 309,695.23 : x
  2. Step 2: Convert to fraction form
    539,299.55/744,208.36 = 309,695.23/x
  3. Step 3: Cross multiply
    539,299.55x = 744,208.36 × 309,695.23
  4. Step 4: Simplify right side
    539,299.55x = 230,477,779,374.15
  5. Step 5: Solve for x
    x = 230,477,779,374.15/539,299.55
  6. Step 6: Final answer
    x = 427,365.05

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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.