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Finding the Fourth Proportional to 519,220.90, 778,962.84 and 159,410.11

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Solution

The fourth proportional to 519,220.90, 778,962.84 and 159,410.11 is: 239,155.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,220.90 : 778,962.84 = 159,410.11 : x
  2. Step 2: Convert to fraction form
    519,220.90/778,962.84 = 159,410.11/x
  3. Step 3: Cross multiply
    519,220.90x = 778,962.84 × 159,410.11
  4. Step 4: Simplify right side
    519,220.90x = 124,174,552,010.31
  5. Step 5: Solve for x
    x = 124,174,552,010.31/519,220.90
  6. Step 6: Final answer
    x = 239,155.53

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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.