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Finding the Fourth Proportional to 519,129.60, 778,809.60 and 238,579.20

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Solution

The fourth proportional to 519,129.60, 778,809.60 and 238,579.20 is: 357,921.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,129.60 : 778,809.60 = 238,579.20 : x
  2. Step 2: Convert to fraction form
    519,129.60/778,809.60 = 238,579.20/x
  3. Step 3: Cross multiply
    519,129.60x = 778,809.60 × 238,579.20
  4. Step 4: Simplify right side
    519,129.60x = 185,807,771,320.32
  5. Step 5: Solve for x
    x = 185,807,771,320.32/519,129.60
  6. Step 6: Final answer
    x = 357,921.74

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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.