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Finding the Fourth Proportional to 346,720.30, 520,080.45 and 306,630.70

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Solution

The fourth proportional to 346,720.30, 520,080.45 and 306,630.70 is: 459,946.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,720.30 : 520,080.45 = 306,630.70 : x
  2. Step 2: Convert to fraction form
    346,720.30/520,080.45 = 306,630.70/x
  3. Step 3: Cross multiply
    346,720.30x = 520,080.45 × 306,630.70
  4. Step 4: Simplify right side
    346,720.30x = 159,472,632,439.82
  5. Step 5: Solve for x
    x = 159,472,632,439.82/346,720.30
  6. Step 6: Final answer
    x = 459,946.05

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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.