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Finding the Fourth Proportional to 338,637.65, 507,984.14 and 170,071.28

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Solution

The fourth proportional to 338,637.65, 507,984.14 and 170,071.28 is: 255,120.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,637.65 : 507,984.14 = 170,071.28 : x
  2. Step 2: Convert to fraction form
    338,637.65/507,984.14 = 170,071.28/x
  3. Step 3: Cross multiply
    338,637.65x = 507,984.14 × 170,071.28
  4. Step 4: Simplify right side
    338,637.65x = 86,393,512,909.50
  5. Step 5: Solve for x
    x = 86,393,512,909.50/338,637.65
  6. Step 6: Final answer
    x = 255,120.81

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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.