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Finding the Fourth Proportional to 340,595.90, 509,980.20 and 190,408.46

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Solution

The fourth proportional to 340,595.90, 509,980.20 and 190,408.46 is: 285,101.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,595.90 : 509,980.20 = 190,408.46 : x
  2. Step 2: Convert to fraction form
    340,595.90/509,980.20 = 190,408.46/x
  3. Step 3: Cross multiply
    340,595.90x = 509,980.20 × 190,408.46
  4. Step 4: Simplify right side
    340,595.90x = 97,104,541,248.56
  5. Step 5: Solve for x
    x = 97,104,541,248.56/340,595.90
  6. Step 6: Final answer
    x = 285,101.91

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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.