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Finding the Fourth Proportional to 499,270.20, 748,905.30 and 310,313.40

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Solution

The fourth proportional to 499,270.20, 748,905.30 and 310,313.40 is: 465,470.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,270.20 : 748,905.30 = 310,313.40 : x
  2. Step 2: Convert to fraction form
    499,270.20/748,905.30 = 310,313.40/x
  3. Step 3: Cross multiply
    499,270.20x = 748,905.30 × 310,313.40
  4. Step 4: Simplify right side
    499,270.20x = 232,395,349,921.02
  5. Step 5: Solve for x
    x = 232,395,349,921.02/499,270.20
  6. Step 6: Final answer
    x = 465,470.10

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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.