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Finding the Fourth Proportional to 290,022.81, 435,033.40 and 79,660.95

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Solution

The fourth proportional to 290,022.81, 435,033.40 and 79,660.95 is: 119,491.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,022.81 : 435,033.40 = 79,660.95 : x
  2. Step 2: Convert to fraction form
    290,022.81/435,033.40 = 79,660.95/x
  3. Step 3: Cross multiply
    290,022.81x = 435,033.40 × 79,660.95
  4. Step 4: Simplify right side
    290,022.81x = 34,655,173,925.73
  5. Step 5: Solve for x
    x = 34,655,173,925.73/290,022.81
  6. Step 6: Final answer
    x = 119,491.20

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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.