Home / 219,088.30-328,632.45-78,828.70

Finding the Fourth Proportional to 219,088.30, 328,632.45 and 78,828.70

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Solution

The fourth proportional to 219,088.30, 328,632.45 and 78,828.70 is: 118,243.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,088.30 : 328,632.45 = 78,828.70 : x
  2. Step 2: Convert to fraction form
    219,088.30/328,632.45 = 78,828.70/x
  3. Step 3: Cross multiply
    219,088.30x = 328,632.45 × 78,828.70
  4. Step 4: Simplify right side
    219,088.30x = 25,905,668,811.32
  5. Step 5: Solve for x
    x = 25,905,668,811.32/219,088.30
  6. Step 6: Final answer
    x = 118,243.05

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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.