Home / 315,345.12-435,177.57-172,108.20

Finding the Fourth Proportional to 315,345.12, 435,177.57 and 172,108.20

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Solution

The fourth proportional to 315,345.12, 435,177.57 and 172,108.20 is: 237,510.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,345.12 : 435,177.57 = 172,108.20 : x
  2. Step 2: Convert to fraction form
    315,345.12/435,177.57 = 172,108.20/x
  3. Step 3: Cross multiply
    315,345.12x = 435,177.57 × 172,108.20
  4. Step 4: Simplify right side
    315,345.12x = 74,897,628,253.07
  5. Step 5: Solve for x
    x = 74,897,628,253.07/315,345.12
  6. Step 6: Final answer
    x = 237,510.03

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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.