Home / 289,934.76-434,727.39-129,981.76

Finding the Fourth Proportional to 289,934.76, 434,727.39 and 129,981.76

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Solution

The fourth proportional to 289,934.76, 434,727.39 and 129,981.76 is: 194,894.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,934.76 : 434,727.39 = 129,981.76 : x
  2. Step 2: Convert to fraction form
    289,934.76/434,727.39 = 129,981.76/x
  3. Step 3: Cross multiply
    289,934.76x = 434,727.39 × 129,981.76
  4. Step 4: Simplify right side
    289,934.76x = 56,506,631,272.41
  5. Step 5: Solve for x
    x = 56,506,631,272.41/289,934.76
  6. Step 6: Final answer
    x = 194,894.30

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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.