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Finding the Fourth Proportional to 620,642.79, 930,962.79 and 165,234.15

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Solution

The fourth proportional to 620,642.79, 930,962.79 and 165,234.15 is: 247,850.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,642.79 : 930,962.79 = 165,234.15 : x
  2. Step 2: Convert to fraction form
    620,642.79/930,962.79 = 165,234.15/x
  3. Step 3: Cross multiply
    620,642.79x = 930,962.79 × 165,234.15
  4. Step 4: Simplify right side
    620,642.79x = 153,826,845,287.28
  5. Step 5: Solve for x
    x = 153,826,845,287.28/620,642.79
  6. Step 6: Final answer
    x = 247,850.85

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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.