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Finding the Fourth Proportional to 306,030.60, 458,827.20 and 137,412.90

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Solution

The fourth proportional to 306,030.60, 458,827.20 and 137,412.90 is: 206,021.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,030.60 : 458,827.20 = 137,412.90 : x
  2. Step 2: Convert to fraction form
    306,030.60/458,827.20 = 137,412.90/x
  3. Step 3: Cross multiply
    306,030.60x = 458,827.20 × 137,412.90
  4. Step 4: Simplify right side
    306,030.60x = 63,048,776,150.88
  5. Step 5: Solve for x
    x = 63,048,776,150.88/306,030.60
  6. Step 6: Final answer
    x = 206,021.15

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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.