Home / 289,623.20-434,434.80-178,877.60

Finding the Fourth Proportional to 289,623.20, 434,434.80 and 178,877.60

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Solution

The fourth proportional to 289,623.20, 434,434.80 and 178,877.60 is: 268,316.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,623.20 : 434,434.80 = 178,877.60 : x
  2. Step 2: Convert to fraction form
    289,623.20/434,434.80 = 178,877.60/x
  3. Step 3: Cross multiply
    289,623.20x = 434,434.80 × 178,877.60
  4. Step 4: Simplify right side
    289,623.20x = 77,710,654,380.48
  5. Step 5: Solve for x
    x = 77,710,654,380.48/289,623.20
  6. Step 6: Final answer
    x = 268,316.40

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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.