Home / 315,528.12-435,427.07-172,287.15

Finding the Fourth Proportional to 315,528.12, 435,427.07 and 172,287.15

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Solution

The fourth proportional to 315,528.12, 435,427.07 and 172,287.15 is: 237,755.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,528.12 : 435,427.07 = 172,287.15 : x
  2. Step 2: Convert to fraction form
    315,528.12/435,427.07 = 172,287.15/x
  3. Step 3: Cross multiply
    315,528.12x = 435,427.07 × 172,287.15
  4. Step 4: Simplify right side
    315,528.12x = 75,018,486,746.02
  5. Step 5: Solve for x
    x = 75,018,486,746.02/315,528.12
  6. Step 6: Final answer
    x = 237,755.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.