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Finding the Fourth Proportional to 459,040.50, 688,599.63 and 126,616.50

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Solution

The fourth proportional to 459,040.50, 688,599.63 and 126,616.50 is: 189,935.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,040.50 : 688,599.63 = 126,616.50 : x
  2. Step 2: Convert to fraction form
    459,040.50/688,599.63 = 126,616.50/x
  3. Step 3: Cross multiply
    459,040.50x = 688,599.63 × 126,616.50
  4. Step 4: Simplify right side
    459,040.50x = 87,188,075,051.90
  5. Step 5: Solve for x
    x = 87,188,075,051.90/459,040.50
  6. Step 6: Final answer
    x = 189,935.47

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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.