Home / 300,353.42-450,437.09-87,136.98

Finding the Fourth Proportional to 300,353.42, 450,437.09 and 87,136.98

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Solution

The fourth proportional to 300,353.42, 450,437.09 and 87,136.98 is: 130,678.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,353.42 : 450,437.09 = 87,136.98 : x
  2. Step 2: Convert to fraction form
    300,353.42/450,437.09 = 87,136.98/x
  3. Step 3: Cross multiply
    300,353.42x = 450,437.09 × 87,136.98
  4. Step 4: Simplify right side
    300,353.42x = 39,249,727,266.90
  5. Step 5: Solve for x
    x = 39,249,727,266.90/300,353.42
  6. Step 6: Final answer
    x = 130,678.48

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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.