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Finding the Fourth Proportional to 426,750.66, 640,158.66 and 127,208.34

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Solution

The fourth proportional to 426,750.66, 640,158.66 and 127,208.34 is: 190,822.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,750.66 : 640,158.66 = 127,208.34 : x
  2. Step 2: Convert to fraction form
    426,750.66/640,158.66 = 127,208.34/x
  3. Step 3: Cross multiply
    426,750.66x = 640,158.66 × 127,208.34
  4. Step 4: Simplify right side
    426,750.66x = 81,433,520,475.22
  5. Step 5: Solve for x
    x = 81,433,520,475.22/426,750.66
  6. Step 6: Final answer
    x = 190,822.25

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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.