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Finding the Fourth Proportional to 545,369.85, 752,603.22 and 315,958.41

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Solution

The fourth proportional to 545,369.85, 752,603.22 and 315,958.41 is: 436,018.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,369.85 : 752,603.22 = 315,958.41 : x
  2. Step 2: Convert to fraction form
    545,369.85/752,603.22 = 315,958.41/x
  3. Step 3: Cross multiply
    545,369.85x = 752,603.22 × 315,958.41
  4. Step 4: Simplify right side
    545,369.85x = 237,791,316,752.08
  5. Step 5: Solve for x
    x = 237,791,316,752.08/545,369.85
  6. Step 6: Final answer
    x = 436,018.45

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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.