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Finding the Fourth Proportional to 257,620.84, 386,394.32 and 124,465.34

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Solution

The fourth proportional to 257,620.84, 386,394.32 and 124,465.34 is: 186,680.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,620.84 : 386,394.32 = 124,465.34 : x
  2. Step 2: Convert to fraction form
    257,620.84/386,394.32 = 124,465.34/x
  3. Step 3: Cross multiply
    257,620.84x = 386,394.32 × 124,465.34
  4. Step 4: Simplify right side
    257,620.84x = 48,092,701,690.02
  5. Step 5: Solve for x
    x = 48,092,701,690.02/257,620.84
  6. Step 6: Final answer
    x = 186,680.17

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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.