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Finding the Fourth Proportional to 340,392.05, 510,607.28 and 103,742.45

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Solution

The fourth proportional to 340,392.05, 510,607.28 and 103,742.45 is: 155,619.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,392.05 : 510,607.28 = 103,742.45 : x
  2. Step 2: Convert to fraction form
    340,392.05/510,607.28 = 103,742.45/x
  3. Step 3: Cross multiply
    340,392.05x = 510,607.28 × 103,742.45
  4. Step 4: Simplify right side
    340,392.05x = 52,971,649,696.32
  5. Step 5: Solve for x
    x = 52,971,649,696.32/340,392.05
  6. Step 6: Final answer
    x = 155,619.53

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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.