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Finding the Fourth Proportional to 257,703.92, 386,582.28 and 89,223.96

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Solution

The fourth proportional to 257,703.92, 386,582.28 and 89,223.96 is: 133,845.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,703.92 : 386,582.28 = 89,223.96 : x
  2. Step 2: Convert to fraction form
    257,703.92/386,582.28 = 89,223.96/x
  3. Step 3: Cross multiply
    257,703.92x = 386,582.28 × 89,223.96
  4. Step 4: Simplify right side
    257,703.92x = 34,492,401,887.43
  5. Step 5: Solve for x
    x = 34,492,401,887.43/257,703.92
  6. Step 6: Final answer
    x = 133,845.08

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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.