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Finding the Fourth Proportional to 346,707.80, 520,061.70 and 196,890.20

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Solution

The fourth proportional to 346,707.80, 520,061.70 and 196,890.20 is: 295,335.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,707.80 : 520,061.70 = 196,890.20 : x
  2. Step 2: Convert to fraction form
    346,707.80/520,061.70 = 196,890.20/x
  3. Step 3: Cross multiply
    346,707.80x = 520,061.70 × 196,890.20
  4. Step 4: Simplify right side
    346,707.80x = 102,395,052,125.34
  5. Step 5: Solve for x
    x = 102,395,052,125.34/346,707.80
  6. Step 6: Final answer
    x = 295,335.30

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1.5x scale

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.