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Finding the Fourth Proportional to 354,740.80, 532,111.20 and 347,742.40

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Solution

The fourth proportional to 354,740.80, 532,111.20 and 347,742.40 is: 521,613.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,740.80 : 532,111.20 = 347,742.40 : x
  2. Step 2: Convert to fraction form
    354,740.80/532,111.20 = 347,742.40/x
  3. Step 3: Cross multiply
    354,740.80x = 532,111.20 × 347,742.40
  4. Step 4: Simplify right side
    354,740.80x = 185,037,625,754.88
  5. Step 5: Solve for x
    x = 185,037,625,754.88/354,740.80
  6. Step 6: Final answer
    x = 521,613.60

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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.