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Finding the Fourth Proportional to 499,215.40, 748,823.10 and 310,258.60

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Solution

The fourth proportional to 499,215.40, 748,823.10 and 310,258.60 is: 465,387.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,215.40 : 748,823.10 = 310,258.60 : x
  2. Step 2: Convert to fraction form
    499,215.40/748,823.10 = 310,258.60/x
  3. Step 3: Cross multiply
    499,215.40x = 748,823.10 × 310,258.60
  4. Step 4: Simplify right side
    499,215.40x = 232,328,806,653.66
  5. Step 5: Solve for x
    x = 232,328,806,653.66/499,215.40
  6. Step 6: Final answer
    x = 465,387.90

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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.