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Finding the Fourth Proportional to 386,460.67, 532,825.34 and 276,210.89

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Solution

The fourth proportional to 386,460.67, 532,825.34 and 276,210.89 is: 380,820.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,460.67 : 532,825.34 = 276,210.89 : x
  2. Step 2: Convert to fraction form
    386,460.67/532,825.34 = 276,210.89/x
  3. Step 3: Cross multiply
    386,460.67x = 532,825.34 × 276,210.89
  4. Step 4: Simplify right side
    386,460.67x = 147,172,163,879.70
  5. Step 5: Solve for x
    x = 147,172,163,879.70/386,460.67
  6. Step 6: Final answer
    x = 380,820.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.