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Finding the Fourth Proportional to 404,698.40, 607,217.70 and 217,491.20

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Solution

The fourth proportional to 404,698.40, 607,217.70 and 217,491.20 is: 326,328.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,698.40 : 607,217.70 = 217,491.20 : x
  2. Step 2: Convert to fraction form
    404,698.40/607,217.70 = 217,491.20/x
  3. Step 3: Cross multiply
    404,698.40x = 607,217.70 × 217,491.20
  4. Step 4: Simplify right side
    404,698.40x = 132,064,506,234.24
  5. Step 5: Solve for x
    x = 132,064,506,234.24/404,698.40
  6. Step 6: Final answer
    x = 326,328.21

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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.