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Finding the Fourth Proportional to 219,094.40, 328,771.20 and 144,430.40

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Solution

The fourth proportional to 219,094.40, 328,771.20 and 144,430.40 is: 216,731.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,094.40 : 328,771.20 = 144,430.40 : x
  2. Step 2: Convert to fraction form
    219,094.40/328,771.20 = 144,430.40/x
  3. Step 3: Cross multiply
    219,094.40x = 328,771.20 × 144,430.40
  4. Step 4: Simplify right side
    219,094.40x = 47,484,555,924.48
  5. Step 5: Solve for x
    x = 47,484,555,924.48/219,094.40
  6. Step 6: Final answer
    x = 216,731.03

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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.