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Finding the Fourth Proportional to 358,877.80, 537,279.90 and 218,909.80

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Solution

The fourth proportional to 358,877.80, 537,279.90 and 218,909.80 is: 327,732.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,877.80 : 537,279.90 = 218,909.80 : x
  2. Step 2: Convert to fraction form
    358,877.80/537,279.90 = 218,909.80/x
  3. Step 3: Cross multiply
    358,877.80x = 537,279.90 × 218,909.80
  4. Step 4: Simplify right side
    358,877.80x = 117,615,835,453.02
  5. Step 5: Solve for x
    x = 117,615,835,453.02/358,877.80
  6. Step 6: Final answer
    x = 327,732.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.