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Finding the Fourth Proportional to 372,809.24, 514,459.08 and 211,643

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Solution

The fourth proportional to 372,809.24, 514,459.08 and 211,643 is: 292,057.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,809.24 : 514,459.08 = 211,643 : x
  2. Step 2: Convert to fraction form
    372,809.24/514,459.08 = 211,643/x
  3. Step 3: Cross multiply
    372,809.24x = 514,459.08 × 211,643
  4. Step 4: Simplify right side
    372,809.24x = 108,881,663,068.44
  5. Step 5: Solve for x
    x = 108,881,663,068.44/372,809.24
  6. Step 6: Final answer
    x = 292,057.31

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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.