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Finding the Fourth Proportional to 519,304.90, 778,880.55 and 145,365.70

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Solution

The fourth proportional to 519,304.90, 778,880.55 and 145,365.70 is: 218,027.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,304.90 : 778,880.55 = 145,365.70 : x
  2. Step 2: Convert to fraction form
    519,304.90/778,880.55 = 145,365.70/x
  3. Step 3: Cross multiply
    519,304.90x = 778,880.55 × 145,365.70
  4. Step 4: Simplify right side
    519,304.90x = 113,222,516,367.14
  5. Step 5: Solve for x
    x = 113,222,516,367.14/519,304.90
  6. Step 6: Final answer
    x = 218,027.05

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1.5x scale

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.