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Finding the Fourth Proportional to 328,165.60, 492,248.40 and 307,429.60

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Solution

The fourth proportional to 328,165.60, 492,248.40 and 307,429.60 is: 461,144.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,165.60 : 492,248.40 = 307,429.60 : x
  2. Step 2: Convert to fraction form
    328,165.60/492,248.40 = 307,429.60/x
  3. Step 3: Cross multiply
    328,165.60x = 492,248.40 × 307,429.60
  4. Step 4: Simplify right side
    328,165.60x = 151,331,728,712.64
  5. Step 5: Solve for x
    x = 151,331,728,712.64/328,165.60
  6. Step 6: Final answer
    x = 461,144.40

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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.