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Finding the Fourth Proportional to 539,345.60, 808,240.80 and 239,580.80

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Solution

The fourth proportional to 539,345.60, 808,240.80 and 239,580.80 is: 359,025.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,345.60 : 808,240.80 = 239,580.80 : x
  2. Step 2: Convert to fraction form
    539,345.60/808,240.80 = 239,580.80/x
  3. Step 3: Cross multiply
    539,345.60x = 808,240.80 × 239,580.80
  4. Step 4: Simplify right side
    539,345.60x = 193,638,977,456.64
  5. Step 5: Solve for x
    x = 193,638,977,456.64/539,345.60
  6. Step 6: Final answer
    x = 359,025.79

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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.