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Finding the Fourth Proportional to 404,668.60, 607,002.90 and 215,711.80

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Solution

The fourth proportional to 404,668.60, 607,002.90 and 215,711.80 is: 323,567.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,668.60 : 607,002.90 = 215,711.80 : x
  2. Step 2: Convert to fraction form
    404,668.60/607,002.90 = 215,711.80/x
  3. Step 3: Cross multiply
    404,668.60x = 607,002.90 × 215,711.80
  4. Step 4: Simplify right side
    404,668.60x = 130,937,688,164.22
  5. Step 5: Solve for x
    x = 130,937,688,164.22/404,668.60
  6. Step 6: Final answer
    x = 323,567.70

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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.