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Finding the Fourth Proportional to 374,479.52, 516,742.68 and 213,300.80

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Solution

The fourth proportional to 374,479.52, 516,742.68 and 213,300.80 is: 294,332.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,479.52 : 516,742.68 = 213,300.80 : x
  2. Step 2: Convert to fraction form
    374,479.52/516,742.68 = 213,300.80/x
  3. Step 3: Cross multiply
    374,479.52x = 516,742.68 × 213,300.80
  4. Step 4: Simplify right side
    374,479.52x = 110,221,627,038.14
  5. Step 5: Solve for x
    x = 110,221,627,038.14/374,479.52
  6. Step 6: Final answer
    x = 294,332.86

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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.