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Finding the Fourth Proportional to 358,814.88, 495,668.16 and 339,919.20

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Solution

The fourth proportional to 358,814.88, 495,668.16 and 339,919.20 is: 469,565.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,814.88 : 495,668.16 = 339,919.20 : x
  2. Step 2: Convert to fraction form
    358,814.88/495,668.16 = 339,919.20/x
  3. Step 3: Cross multiply
    358,814.88x = 495,668.16 × 339,919.20
  4. Step 4: Simplify right side
    358,814.88x = 168,487,124,412.67
  5. Step 5: Solve for x
    x = 168,487,124,412.67/358,814.88
  6. Step 6: Final answer
    x = 469,565.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.