Home / 428,269.37-642,155.05-162,050.45

Finding the Fourth Proportional to 428,269.37, 642,155.05 and 162,050.45

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Solution

The fourth proportional to 428,269.37, 642,155.05 and 162,050.45 is: 242,981.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,269.37 : 642,155.05 = 162,050.45 : x
  2. Step 2: Convert to fraction form
    428,269.37/642,155.05 = 162,050.45/x
  3. Step 3: Cross multiply
    428,269.37x = 642,155.05 × 162,050.45
  4. Step 4: Simplify right side
    428,269.37x = 104,061,514,012.02
  5. Step 5: Solve for x
    x = 104,061,514,012.02/428,269.37
  6. Step 6: Final answer
    x = 242,981.45

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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.