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Finding the Fourth Proportional to 270,018.80, 404,639.40 and 120,136.40

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Solution

The fourth proportional to 270,018.80, 404,639.40 and 120,136.40 is: 180,031.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,018.80 : 404,639.40 = 120,136.40 : x
  2. Step 2: Convert to fraction form
    270,018.80/404,639.40 = 120,136.40/x
  3. Step 3: Cross multiply
    270,018.80x = 404,639.40 × 120,136.40
  4. Step 4: Simplify right side
    270,018.80x = 48,611,920,814.16
  5. Step 5: Solve for x
    x = 48,611,920,814.16/270,018.80
  6. Step 6: Final answer
    x = 180,031.62

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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.