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Finding the Fourth Proportional to 372,384, 513,885.60 and 202,615.20

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Solution

The fourth proportional to 372,384, 513,885.60 and 202,615.20 is: 279,606.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,384 : 513,885.60 = 202,615.20 : x
  2. Step 2: Convert to fraction form
    372,384/513,885.60 = 202,615.20/x
  3. Step 3: Cross multiply
    372,384x = 513,885.60 × 202,615.20
  4. Step 4: Simplify right side
    372,384x = 104,121,033,621.12
  5. Step 5: Solve for x
    x = 104,121,033,621.12/372,384
  6. Step 6: Final answer
    x = 279,606.63

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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.