Home / 289,934.10-434,901.15-121,644.45

Finding the Fourth Proportional to 289,934.10, 434,901.15 and 121,644.45

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Solution

The fourth proportional to 289,934.10, 434,901.15 and 121,644.45 is: 182,466.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,934.10 : 434,901.15 = 121,644.45 : x
  2. Step 2: Convert to fraction form
    289,934.10/434,901.15 = 121,644.45/x
  3. Step 3: Cross multiply
    289,934.10x = 434,901.15 × 121,644.45
  4. Step 4: Simplify right side
    289,934.10x = 52,903,311,196.12
  5. Step 5: Solve for x
    x = 52,903,311,196.12/289,934.10
  6. Step 6: Final answer
    x = 182,466.68

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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.