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Finding the Fourth Proportional to 246,886.40, 370,243.20 and 128,518.40

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Solution

The fourth proportional to 246,886.40, 370,243.20 and 128,518.40 is: 192,732.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,886.40 : 370,243.20 = 128,518.40 : x
  2. Step 2: Convert to fraction form
    246,886.40/370,243.20 = 128,518.40/x
  3. Step 3: Cross multiply
    246,886.40x = 370,243.20 × 128,518.40
  4. Step 4: Simplify right side
    246,886.40x = 47,583,063,674.88
  5. Step 5: Solve for x
    x = 47,583,063,674.88/246,886.40
  6. Step 6: Final answer
    x = 192,732.62

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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.