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Finding the Fourth Proportional to 404,317.80, 606,476.70 and 358,828.20

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Solution

The fourth proportional to 404,317.80, 606,476.70 and 358,828.20 is: 538,242.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,317.80 : 606,476.70 = 358,828.20 : x
  2. Step 2: Convert to fraction form
    404,317.80/606,476.70 = 358,828.20/x
  3. Step 3: Cross multiply
    404,317.80x = 606,476.70 × 358,828.20
  4. Step 4: Simplify right side
    404,317.80x = 217,620,942,602.94
  5. Step 5: Solve for x
    x = 217,620,942,602.94/404,317.80
  6. Step 6: Final answer
    x = 538,242.30

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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.