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Finding the Fourth Proportional to 355,565.40, 533,348.10 and 328,531.80

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Solution

The fourth proportional to 355,565.40, 533,348.10 and 328,531.80 is: 492,797.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,565.40 : 533,348.10 = 328,531.80 : x
  2. Step 2: Convert to fraction form
    355,565.40/533,348.10 = 328,531.80/x
  3. Step 3: Cross multiply
    355,565.40x = 533,348.10 × 328,531.80
  4. Step 4: Simplify right side
    355,565.40x = 175,221,811,319.58
  5. Step 5: Solve for x
    x = 175,221,811,319.58/355,565.40
  6. Step 6: Final answer
    x = 492,797.70

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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.