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Finding the Fourth Proportional to 373,216, 515,221.95 and 258,581.56

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Solution

The fourth proportional to 373,216, 515,221.95 and 258,581.56 is: 356,969.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,216 : 515,221.95 = 258,581.56 : x
  2. Step 2: Convert to fraction form
    373,216/515,221.95 = 258,581.56/x
  3. Step 3: Cross multiply
    373,216x = 515,221.95 × 258,581.56
  4. Step 4: Simplify right side
    373,216x = 133,226,895,577.24
  5. Step 5: Solve for x
    x = 133,226,895,577.24/373,216
  6. Step 6: Final answer
    x = 356,969.95

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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.