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Finding the Fourth Proportional to 340,564.40, 510,889.01 and 115,907.57

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Solution

The fourth proportional to 340,564.40, 510,889.01 and 115,907.57 is: 173,875.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,564.40 : 510,889.01 = 115,907.57 : x
  2. Step 2: Convert to fraction form
    340,564.40/510,889.01 = 115,907.57/x
  3. Step 3: Cross multiply
    340,564.40x = 510,889.01 × 115,907.57
  4. Step 4: Simplify right side
    340,564.40x = 59,215,900,554.82
  5. Step 5: Solve for x
    x = 59,215,900,554.82/340,564.40
  6. Step 6: Final answer
    x = 173,875.78

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1.5x scale

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.