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Finding the Fourth Proportional to 458,012.40, 686,887.08 and 154,373.28

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Solution

The fourth proportional to 458,012.40, 686,887.08 and 154,373.28 is: 231,515.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,012.40 : 686,887.08 = 154,373.28 : x
  2. Step 2: Convert to fraction form
    458,012.40/686,887.08 = 154,373.28/x
  3. Step 3: Cross multiply
    458,012.40x = 686,887.08 × 154,373.28
  4. Step 4: Simplify right side
    458,012.40x = 106,037,011,529.22
  5. Step 5: Solve for x
    x = 106,037,011,529.22/458,012.40
  6. Step 6: Final answer
    x = 231,515.59

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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.