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Finding the Fourth Proportional to 306,047.20, 459,070.80 and 106,301.20

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Solution

The fourth proportional to 306,047.20, 459,070.80 and 106,301.20 is: 159,451.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,047.20 : 459,070.80 = 106,301.20 : x
  2. Step 2: Convert to fraction form
    306,047.20/459,070.80 = 106,301.20/x
  3. Step 3: Cross multiply
    306,047.20x = 459,070.80 × 106,301.20
  4. Step 4: Simplify right side
    306,047.20x = 48,799,776,924.96
  5. Step 5: Solve for x
    x = 48,799,776,924.96/306,047.20
  6. Step 6: Final answer
    x = 159,451.80

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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.