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Finding the Fourth Proportional to 328,843.60, 493,265.40 and 315,941.20

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Solution

The fourth proportional to 328,843.60, 493,265.40 and 315,941.20 is: 473,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,843.60 : 493,265.40 = 315,941.20 : x
  2. Step 2: Convert to fraction form
    328,843.60/493,265.40 = 315,941.20/x
  3. Step 3: Cross multiply
    328,843.60x = 493,265.40 × 315,941.20
  4. Step 4: Simplify right side
    328,843.60x = 155,842,862,394.48
  5. Step 5: Solve for x
    x = 155,842,862,394.48/328,843.60
  6. Step 6: Final answer
    x = 473,911.80

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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.