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Finding the Fourth Proportional to 391,752.02, 587,580.64 and 107,465.72

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Solution

The fourth proportional to 391,752.02, 587,580.64 and 107,465.72 is: 161,185.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,752.02 : 587,580.64 = 107,465.72 : x
  2. Step 2: Convert to fraction form
    391,752.02/587,580.64 = 107,465.72/x
  3. Step 3: Cross multiply
    391,752.02x = 587,580.64 × 107,465.72
  4. Step 4: Simplify right side
    391,752.02x = 63,144,776,535.66
  5. Step 5: Solve for x
    x = 63,144,776,535.66/391,752.02
  6. Step 6: Final answer
    x = 161,185.58

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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.