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Finding the Fourth Proportional to 545,108.81, 752,242.68 and 303,391.51

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Solution

The fourth proportional to 545,108.81, 752,242.68 and 303,391.51 is: 418,676.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,108.81 : 752,242.68 = 303,391.51 : x
  2. Step 2: Convert to fraction form
    545,108.81/752,242.68 = 303,391.51/x
  3. Step 3: Cross multiply
    545,108.81x = 752,242.68 × 303,391.51
  4. Step 4: Simplify right side
    545,108.81x = 228,224,040,691.04
  5. Step 5: Solve for x
    x = 228,224,040,691.04/545,108.81
  6. Step 6: Final answer
    x = 418,676.12

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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.