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Finding the Fourth Proportional to 355,706.35, 533,560.43 and 145,344.28

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Solution

The fourth proportional to 355,706.35, 533,560.43 and 145,344.28 is: 218,016.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,706.35 : 533,560.43 = 145,344.28 : x
  2. Step 2: Convert to fraction form
    355,706.35/533,560.43 = 145,344.28/x
  3. Step 3: Cross multiply
    355,706.35x = 533,560.43 × 145,344.28
  4. Step 4: Simplify right side
    355,706.35x = 77,549,955,808.12
  5. Step 5: Solve for x
    x = 77,549,955,808.12/355,706.35
  6. Step 6: Final answer
    x = 218,016.79

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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.