Home / 387,135.54-534,441.30-242,021.94

Finding the Fourth Proportional to 387,135.54, 534,441.30 and 242,021.94

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Solution

The fourth proportional to 387,135.54, 534,441.30 and 242,021.94 is: 334,111.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,135.54 : 534,441.30 = 242,021.94 : x
  2. Step 2: Convert to fraction form
    387,135.54/534,441.30 = 242,021.94/x
  3. Step 3: Cross multiply
    387,135.54x = 534,441.30 × 242,021.94
  4. Step 4: Simplify right side
    387,135.54x = 129,346,520,242.12
  5. Step 5: Solve for x
    x = 129,346,520,242.12/387,135.54
  6. Step 6: Final answer
    x = 334,111.72

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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.