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Finding the Fourth Proportional to 219,756.86, 329,685 and 70,005.68

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Solution

The fourth proportional to 219,756.86, 329,685 and 70,005.68 is: 105,024.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,756.86 : 329,685 = 70,005.68 : x
  2. Step 2: Convert to fraction form
    219,756.86/329,685 = 70,005.68/x
  3. Step 3: Cross multiply
    219,756.86x = 329,685 × 70,005.68
  4. Step 4: Simplify right side
    219,756.86x = 23,079,822,610.80
  5. Step 5: Solve for x
    x = 23,079,822,610.80/219,756.86
  6. Step 6: Final answer
    x = 105,024.36

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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.