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Finding the Fourth Proportional to 404,920.40, 607,927.80 and 236,613.20

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Solution

The fourth proportional to 404,920.40, 607,927.80 and 236,613.20 is: 355,239.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,920.40 : 607,927.80 = 236,613.20 : x
  2. Step 2: Convert to fraction form
    404,920.40/607,927.80 = 236,613.20/x
  3. Step 3: Cross multiply
    404,920.40x = 607,927.80 × 236,613.20
  4. Step 4: Simplify right side
    404,920.40x = 143,843,742,126.96
  5. Step 5: Solve for x
    x = 143,843,742,126.96/404,920.40
  6. Step 6: Final answer
    x = 355,239.55

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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.