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Finding the Fourth Proportional to 346,717.80, 520,076.70 and 313,540.20

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Solution

The fourth proportional to 346,717.80, 520,076.70 and 313,540.20 is: 470,310.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,717.80 : 520,076.70 = 313,540.20 : x
  2. Step 2: Convert to fraction form
    346,717.80/520,076.70 = 313,540.20/x
  3. Step 3: Cross multiply
    346,717.80x = 520,076.70 × 313,540.20
  4. Step 4: Simplify right side
    346,717.80x = 163,064,952,533.34
  5. Step 5: Solve for x
    x = 163,064,952,533.34/346,717.80
  6. Step 6: Final answer
    x = 470,310.30

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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.