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Finding the Fourth Proportional to 306,309.16, 459,403.18 and 291,119.03

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Solution

The fourth proportional to 306,309.16, 459,403.18 and 291,119.03 is: 436,620.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,309.16 : 459,403.18 = 291,119.03 : x
  2. Step 2: Convert to fraction form
    306,309.16/459,403.18 = 291,119.03/x
  3. Step 3: Cross multiply
    306,309.16x = 459,403.18 × 291,119.03
  4. Step 4: Simplify right side
    306,309.16x = 133,741,006,838.46
  5. Step 5: Solve for x
    x = 133,741,006,838.46/306,309.16
  6. Step 6: Final answer
    x = 436,620.98

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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.