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Finding the Fourth Proportional to 221,707.90, 332,561.85 and 155,223.10

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Solution

The fourth proportional to 221,707.90, 332,561.85 and 155,223.10 is: 232,834.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,707.90 : 332,561.85 = 155,223.10 : x
  2. Step 2: Convert to fraction form
    221,707.90/332,561.85 = 155,223.10/x
  3. Step 3: Cross multiply
    221,707.90x = 332,561.85 × 155,223.10
  4. Step 4: Simplify right side
    221,707.90x = 51,621,281,298.74
  5. Step 5: Solve for x
    x = 51,621,281,298.74/221,707.90
  6. Step 6: Final answer
    x = 232,834.65

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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.