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Finding the Fourth Proportional to 219,254.40, 329,011.20 and 144,590.40

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Solution

The fourth proportional to 219,254.40, 329,011.20 and 144,590.40 is: 216,971.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,254.40 : 329,011.20 = 144,590.40 : x
  2. Step 2: Convert to fraction form
    219,254.40/329,011.20 = 144,590.40/x
  3. Step 3: Cross multiply
    219,254.40x = 329,011.20 × 144,590.40
  4. Step 4: Simplify right side
    219,254.40x = 47,571,861,012.48
  5. Step 5: Solve for x
    x = 47,571,861,012.48/219,254.40
  6. Step 6: Final answer
    x = 216,971.07

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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.