Home / 315,746.02-435,735.21-172,512.10

Finding the Fourth Proportional to 315,746.02, 435,735.21 and 172,512.10

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Solution

The fourth proportional to 315,746.02, 435,735.21 and 172,512.10 is: 238,069.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,746.02 : 435,735.21 = 172,512.10 : x
  2. Step 2: Convert to fraction form
    315,746.02/435,735.21 = 172,512.10/x
  3. Step 3: Cross multiply
    315,746.02x = 435,735.21 × 172,512.10
  4. Step 4: Simplify right side
    315,746.02x = 75,169,596,121.04
  5. Step 5: Solve for x
    x = 75,169,596,121.04/315,746.02
  6. Step 6: Final answer
    x = 238,069.81

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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.