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Finding the Fourth Proportional to 346,712.80, 520,069.20 and 327,359.20

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Solution

The fourth proportional to 346,712.80, 520,069.20 and 327,359.20 is: 491,038.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,712.80 : 520,069.20 = 327,359.20 : x
  2. Step 2: Convert to fraction form
    346,712.80/520,069.20 = 327,359.20/x
  3. Step 3: Cross multiply
    346,712.80x = 520,069.20 × 327,359.20
  4. Step 4: Simplify right side
    346,712.80x = 170,249,437,256.64
  5. Step 5: Solve for x
    x = 170,249,437,256.64/346,712.80
  6. Step 6: Final answer
    x = 491,038.80

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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.