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Finding the Fourth Proportional to 375,443.96, 517,697.65 and 289,211.45

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Solution

The fourth proportional to 375,443.96, 517,697.65 and 289,211.45 is: 398,792.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,443.96 : 517,697.65 = 289,211.45 : x
  2. Step 2: Convert to fraction form
    375,443.96/517,697.65 = 289,211.45/x
  3. Step 3: Cross multiply
    375,443.96x = 517,697.65 × 289,211.45
  4. Step 4: Simplify right side
    375,443.96x = 149,724,088,589.31
  5. Step 5: Solve for x
    x = 149,724,088,589.31/375,443.96
  6. Step 6: Final answer
    x = 398,792.11

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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.