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Finding the Fourth Proportional to 335,981.20, 503,971.80 and 310,320.40

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Solution

The fourth proportional to 335,981.20, 503,971.80 and 310,320.40 is: 465,480.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,981.20 : 503,971.80 = 310,320.40 : x
  2. Step 2: Convert to fraction form
    335,981.20/503,971.80 = 310,320.40/x
  3. Step 3: Cross multiply
    335,981.20x = 503,971.80 × 310,320.40
  4. Step 4: Simplify right side
    335,981.20x = 156,392,730,564.72
  5. Step 5: Solve for x
    x = 156,392,730,564.72/335,981.20
  6. Step 6: Final answer
    x = 465,480.60

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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.