Home / 372,115.32-513,519.12-210,970.35

Finding the Fourth Proportional to 372,115.32, 513,519.12 and 210,970.35

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Solution

The fourth proportional to 372,115.32, 513,519.12 and 210,970.35 is: 291,139.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,115.32 : 513,519.12 = 210,970.35 : x
  2. Step 2: Convert to fraction form
    372,115.32/513,519.12 = 210,970.35/x
  3. Step 3: Cross multiply
    372,115.32x = 513,519.12 × 210,970.35
  4. Step 4: Simplify right side
    372,115.32x = 108,337,308,478.09
  5. Step 5: Solve for x
    x = 108,337,308,478.09/372,115.32
  6. Step 6: Final answer
    x = 291,139.07

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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.