Home / 385,115.34-577,686.20-132,393.68

Finding the Fourth Proportional to 385,115.34, 577,686.20 and 132,393.68

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Solution

The fourth proportional to 385,115.34, 577,686.20 and 132,393.68 is: 198,595.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,115.34 : 577,686.20 = 132,393.68 : x
  2. Step 2: Convert to fraction form
    385,115.34/577,686.20 = 132,393.68/x
  3. Step 3: Cross multiply
    385,115.34x = 577,686.20 × 132,393.68
  4. Step 4: Simplify right side
    385,115.34x = 76,482,001,903.22
  5. Step 5: Solve for x
    x = 76,482,001,903.22/385,115.34
  6. Step 6: Final answer
    x = 198,595.05

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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.