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Finding the Fourth Proportional to 507,290.76, 760,968.95 and 170,317.80

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Solution

The fourth proportional to 507,290.76, 760,968.95 and 170,317.80 is: 255,487.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,290.76 : 760,968.95 = 170,317.80 : x
  2. Step 2: Convert to fraction form
    507,290.76/760,968.95 = 170,317.80/x
  3. Step 3: Cross multiply
    507,290.76x = 760,968.95 × 170,317.80
  4. Step 4: Simplify right side
    507,290.76x = 129,606,556,580.72
  5. Step 5: Solve for x
    x = 129,606,556,580.72/507,290.76
  6. Step 6: Final answer
    x = 255,487.71

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1.5x scale

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.