Home / 345,078.16-517,441.08-157,929.20

Finding the Fourth Proportional to 345,078.16, 517,441.08 and 157,929.20

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Solution

The fourth proportional to 345,078.16, 517,441.08 and 157,929.20 is: 236,813.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,078.16 : 517,441.08 = 157,929.20 : x
  2. Step 2: Convert to fraction form
    345,078.16/517,441.08 = 157,929.20/x
  3. Step 3: Cross multiply
    345,078.16x = 517,441.08 × 157,929.20
  4. Step 4: Simplify right side
    345,078.16x = 81,719,055,811.54
  5. Step 5: Solve for x
    x = 81,719,055,811.54/345,078.16
  6. Step 6: Final answer
    x = 236,813.18

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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.