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Finding the Fourth Proportional to 338,645.17, 507,995.40 and 170,078.80

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Solution

The fourth proportional to 338,645.17, 507,995.40 and 170,078.80 is: 255,132.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,645.17 : 507,995.40 = 170,078.80 : x
  2. Step 2: Convert to fraction form
    338,645.17/507,995.40 = 170,078.80/x
  3. Step 3: Cross multiply
    338,645.17x = 507,995.40 × 170,078.80
  4. Step 4: Simplify right side
    338,645.17x = 86,399,248,037.52
  5. Step 5: Solve for x
    x = 86,399,248,037.52/338,645.17
  6. Step 6: Final answer
    x = 255,132.08

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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.