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Finding the Fourth Proportional to 550,159.20, 759,207.60 and 308,455.20

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Solution

The fourth proportional to 550,159.20, 759,207.60 and 308,455.20 is: 425,661.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,159.20 : 759,207.60 = 308,455.20 : x
  2. Step 2: Convert to fraction form
    550,159.20/759,207.60 = 308,455.20/x
  3. Step 3: Cross multiply
    550,159.20x = 759,207.60 × 308,455.20
  4. Step 4: Simplify right side
    550,159.20x = 234,181,532,099.52
  5. Step 5: Solve for x
    x = 234,181,532,099.52/550,159.20
  6. Step 6: Final answer
    x = 425,661.39

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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.