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Finding the Fourth Proportional to 344,602.32, 516,903.66 and 131,320.50

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Solution

The fourth proportional to 344,602.32, 516,903.66 and 131,320.50 is: 196,980.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,602.32 : 516,903.66 = 131,320.50 : x
  2. Step 2: Convert to fraction form
    344,602.32/516,903.66 = 131,320.50/x
  3. Step 3: Cross multiply
    344,602.32x = 516,903.66 × 131,320.50
  4. Step 4: Simplify right side
    344,602.32x = 67,880,047,083.03
  5. Step 5: Solve for x
    x = 67,880,047,083.03/344,602.32
  6. Step 6: Final answer
    x = 196,980.82

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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.