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Finding the Fourth Proportional to 217,045.71, 325,648.35 and 90,698.67

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Solution

The fourth proportional to 217,045.71, 325,648.35 and 90,698.67 is: 136,081.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,045.71 : 325,648.35 = 90,698.67 : x
  2. Step 2: Convert to fraction form
    217,045.71/325,648.35 = 90,698.67/x
  3. Step 3: Cross multiply
    217,045.71x = 325,648.35 × 90,698.67
  4. Step 4: Simplify right side
    217,045.71x = 29,535,872,232.69
  5. Step 5: Solve for x
    x = 29,535,872,232.69/217,045.71
  6. Step 6: Final answer
    x = 136,081.35

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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.