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Finding the Fourth Proportional to 348,047.30, 520,904.55 and 306,056.90

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Solution

The fourth proportional to 348,047.30, 520,904.55 and 306,056.90 is: 458,059.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,047.30 : 520,904.55 = 306,056.90 : x
  2. Step 2: Convert to fraction form
    348,047.30/520,904.55 = 306,056.90/x
  3. Step 3: Cross multiply
    348,047.30x = 520,904.55 × 306,056.90
  4. Step 4: Simplify right side
    348,047.30x = 159,426,431,768.90
  5. Step 5: Solve for x
    x = 159,426,431,768.90/348,047.30
  6. Step 6: Final answer
    x = 458,059.67

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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.