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Finding the Fourth Proportional to 219,317.70, 328,976.55 and 144,522.30

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Solution

The fourth proportional to 219,317.70, 328,976.55 and 144,522.30 is: 216,783.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,317.70 : 328,976.55 = 144,522.30 : x
  2. Step 2: Convert to fraction form
    219,317.70/328,976.55 = 144,522.30/x
  3. Step 3: Cross multiply
    219,317.70x = 328,976.55 × 144,522.30
  4. Step 4: Simplify right side
    219,317.70x = 47,544,447,652.07
  5. Step 5: Solve for x
    x = 47,544,447,652.07/219,317.70
  6. Step 6: Final answer
    x = 216,783.45

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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.