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Finding the Fourth Proportional to 346,636.40, 520,051.80 and 147,052.40

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Solution

The fourth proportional to 346,636.40, 520,051.80 and 147,052.40 is: 220,619.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,636.40 : 520,051.80 = 147,052.40 : x
  2. Step 2: Convert to fraction form
    346,636.40/520,051.80 = 147,052.40/x
  3. Step 3: Cross multiply
    346,636.40x = 520,051.80 × 147,052.40
  4. Step 4: Simplify right side
    346,636.40x = 76,474,865,314.32
  5. Step 5: Solve for x
    x = 76,474,865,314.32/346,636.40
  6. Step 6: Final answer
    x = 220,619.83

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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.