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Finding the Fourth Proportional to 619,315.10, 928,999.65 and 170,024.30

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Solution

The fourth proportional to 619,315.10, 928,999.65 and 170,024.30 is: 255,043.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,315.10 : 928,999.65 = 170,024.30 : x
  2. Step 2: Convert to fraction form
    619,315.10/928,999.65 = 170,024.30/x
  3. Step 3: Cross multiply
    619,315.10x = 928,999.65 × 170,024.30
  4. Step 4: Simplify right side
    619,315.10x = 157,952,515,191.50
  5. Step 5: Solve for x
    x = 157,952,515,191.50/619,315.10
  6. Step 6: Final answer
    x = 255,043.86

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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.