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Finding the Fourth Proportional to 340,432.40, 510,497.60 and 129,923.12

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Solution

The fourth proportional to 340,432.40, 510,497.60 and 129,923.12 is: 194,827.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,432.40 : 510,497.60 = 129,923.12 : x
  2. Step 2: Convert to fraction form
    340,432.40/510,497.60 = 129,923.12/x
  3. Step 3: Cross multiply
    340,432.40x = 510,497.60 × 129,923.12
  4. Step 4: Simplify right side
    340,432.40x = 66,325,440,944.51
  5. Step 5: Solve for x
    x = 66,325,440,944.51/340,432.40
  6. Step 6: Final answer
    x = 194,827.05

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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.