Home / 228,421.45-315,217.78-126,444.76

Finding the Fourth Proportional to 228,421.45, 315,217.78 and 126,444.76

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Solution

The fourth proportional to 228,421.45, 315,217.78 and 126,444.76 is: 174,491.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,421.45 : 315,217.78 = 126,444.76 : x
  2. Step 2: Convert to fraction form
    228,421.45/315,217.78 = 126,444.76/x
  3. Step 3: Cross multiply
    228,421.45x = 315,217.78 × 126,444.76
  4. Step 4: Simplify right side
    228,421.45x = 39,857,636,539.83
  5. Step 5: Solve for x
    x = 39,857,636,539.83/228,421.45
  6. Step 6: Final answer
    x = 174,491.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.