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Finding the Fourth Proportional to 545,381.70, 817,798.77 and 317,750.91

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Solution

The fourth proportional to 545,381.70, 817,798.77 and 317,750.91 is: 476,466.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,381.70 : 817,798.77 = 317,750.91 : x
  2. Step 2: Convert to fraction form
    545,381.70/817,798.77 = 317,750.91/x
  3. Step 3: Cross multiply
    545,381.70x = 817,798.77 × 317,750.91
  4. Step 4: Simplify right side
    545,381.70x = 259,856,303,364.38
  5. Step 5: Solve for x
    x = 259,856,303,364.38/545,381.70
  6. Step 6: Final answer
    x = 476,466.85

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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.