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Finding the Fourth Proportional to 228,357.18, 315,126.45 and 126,386.87

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Solution

The fourth proportional to 228,357.18, 315,126.45 and 126,386.87 is: 174,410.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,357.18 : 315,126.45 = 126,386.87 : x
  2. Step 2: Convert to fraction form
    228,357.18/315,126.45 = 126,386.87/x
  3. Step 3: Cross multiply
    228,357.18x = 315,126.45 × 126,386.87
  4. Step 4: Simplify right side
    228,357.18x = 39,827,844,094.08
  5. Step 5: Solve for x
    x = 39,827,844,094.08/228,357.18
  6. Step 6: Final answer
    x = 174,410.30

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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.