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Finding the Fourth Proportional to 372,445.40, 514,030 and 219,434.68

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Solution

The fourth proportional to 372,445.40, 514,030 and 219,434.68 is: 302,852.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,445.40 : 514,030 = 219,434.68 : x
  2. Step 2: Convert to fraction form
    372,445.40/514,030 = 219,434.68/x
  3. Step 3: Cross multiply
    372,445.40x = 514,030 × 219,434.68
  4. Step 4: Simplify right side
    372,445.40x = 112,796,008,560.40
  5. Step 5: Solve for x
    x = 112,796,008,560.40/372,445.40
  6. Step 6: Final answer
    x = 302,852.47

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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.