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Finding the Fourth Proportional to 306,862.81, 460,343.81 and 90,743.47

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Solution

The fourth proportional to 306,862.81, 460,343.81 and 90,743.47 is: 136,129.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,862.81 : 460,343.81 = 90,743.47 : x
  2. Step 2: Convert to fraction form
    306,862.81/460,343.81 = 90,743.47/x
  3. Step 3: Cross multiply
    306,862.81x = 460,343.81 × 90,743.47
  4. Step 4: Simplify right side
    306,862.81x = 41,773,194,258.70
  5. Step 5: Solve for x
    x = 41,773,194,258.70/306,862.81
  6. Step 6: Final answer
    x = 136,129.87

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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.