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Finding the Fourth Proportional to 346,747.40, 520,121.10 and 97,429.40

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Solution

The fourth proportional to 346,747.40, 520,121.10 and 97,429.40 is: 146,144.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,747.40 : 520,121.10 = 97,429.40 : x
  2. Step 2: Convert to fraction form
    346,747.40/520,121.10 = 97,429.40/x
  3. Step 3: Cross multiply
    346,747.40x = 520,121.10 × 97,429.40
  4. Step 4: Simplify right side
    346,747.40x = 50,675,086,700.34
  5. Step 5: Solve for x
    x = 50,675,086,700.34/346,747.40
  6. Step 6: Final answer
    x = 146,144.10

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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.