Home / 306,837.60-423,440.64-172,701.60

Finding the Fourth Proportional to 306,837.60, 423,440.64 and 172,701.60

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Solution

The fourth proportional to 306,837.60, 423,440.64 and 172,701.60 is: 238,330.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,837.60 : 423,440.64 = 172,701.60 : x
  2. Step 2: Convert to fraction form
    306,837.60/423,440.64 = 172,701.60/x
  3. Step 3: Cross multiply
    306,837.60x = 423,440.64 × 172,701.60
  4. Step 4: Simplify right side
    306,837.60x = 73,128,876,033.02
  5. Step 5: Solve for x
    x = 73,128,876,033.02/306,837.60
  6. Step 6: Final answer
    x = 238,330.88

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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.