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Finding the Fourth Proportional to 375,869.28, 563,792.94 and 139,206.72

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Solution

The fourth proportional to 375,869.28, 563,792.94 and 139,206.72 is: 208,806.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,869.28 : 563,792.94 = 139,206.72 : x
  2. Step 2: Convert to fraction form
    375,869.28/563,792.94 = 139,206.72/x
  3. Step 3: Cross multiply
    375,869.28x = 563,792.94 × 139,206.72
  4. Step 4: Simplify right side
    375,869.28x = 78,483,765,936.56
  5. Step 5: Solve for x
    x = 78,483,765,936.56/375,869.28
  6. Step 6: Final answer
    x = 208,806.01

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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.