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Finding the Fourth Proportional to 228,740.14, 315,656.86 and 126,763.49

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Solution

The fourth proportional to 228,740.14, 315,656.86 and 126,763.49 is: 174,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,740.14 : 315,656.86 = 126,763.49 : x
  2. Step 2: Convert to fraction form
    228,740.14/315,656.86 = 126,763.49/x
  3. Step 3: Cross multiply
    228,740.14x = 315,656.86 × 126,763.49
  4. Step 4: Simplify right side
    228,740.14x = 40,013,764,681.65
  5. Step 5: Solve for x
    x = 40,013,764,681.65/228,740.14
  6. Step 6: Final answer
    x = 174,931.10

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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.