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Finding the Fourth Proportional to 228,434.57, 315,235.92 and 126,457.93

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Solution

The fourth proportional to 228,434.57, 315,235.92 and 126,457.93 is: 174,509.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,434.57 : 315,235.92 = 126,457.93 : x
  2. Step 2: Convert to fraction form
    228,434.57/315,235.92 = 126,457.93/x
  3. Step 3: Cross multiply
    228,434.57x = 315,235.92 × 126,457.93
  4. Step 4: Simplify right side
    228,434.57x = 39,864,081,116.76
  5. Step 5: Solve for x
    x = 39,864,081,116.76/228,434.57
  6. Step 6: Final answer
    x = 174,509.85

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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.