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Finding the Fourth Proportional to 338,566.40, 507,915.98 and 125,335.96

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Solution

The fourth proportional to 338,566.40, 507,915.98 and 125,335.96 is: 188,028.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,566.40 : 507,915.98 = 125,335.96 : x
  2. Step 2: Convert to fraction form
    338,566.40/507,915.98 = 125,335.96/x
  3. Step 3: Cross multiply
    338,566.40x = 507,915.98 × 125,335.96
  4. Step 4: Simplify right side
    338,566.40x = 63,660,136,952.64
  5. Step 5: Solve for x
    x = 63,660,136,952.64/338,566.40
  6. Step 6: Final answer
    x = 188,028.51

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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.