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Finding the Fourth Proportional to 356,986.60, 534,443.10 and 346,618.60

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Solution

The fourth proportional to 356,986.60, 534,443.10 and 346,618.60 is: 518,921.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,986.60 : 534,443.10 = 346,618.60 : x
  2. Step 2: Convert to fraction form
    356,986.60/534,443.10 = 346,618.60/x
  3. Step 3: Cross multiply
    356,986.60x = 534,443.10 × 346,618.60
  4. Step 4: Simplify right side
    356,986.60x = 185,247,919,101.66
  5. Step 5: Solve for x
    x = 185,247,919,101.66/356,986.60
  6. Step 6: Final answer
    x = 518,921.21

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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.