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Finding the Fourth Proportional to 423,879.84, 634,258.08 and 255,499.20

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Solution

The fourth proportional to 423,879.84, 634,258.08 and 255,499.20 is: 382,307.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,879.84 : 634,258.08 = 255,499.20 : x
  2. Step 2: Convert to fraction form
    423,879.84/634,258.08 = 255,499.20/x
  3. Step 3: Cross multiply
    423,879.84x = 634,258.08 × 255,499.20
  4. Step 4: Simplify right side
    423,879.84x = 162,052,432,033.54
  5. Step 5: Solve for x
    x = 162,052,432,033.54/423,879.84
  6. Step 6: Final answer
    x = 382,307.48

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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.