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Finding the Fourth Proportional to 310,927.20, 466,390.80 and 248,719.20

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Solution

The fourth proportional to 310,927.20, 466,390.80 and 248,719.20 is: 373,078.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,927.20 : 466,390.80 = 248,719.20 : x
  2. Step 2: Convert to fraction form
    310,927.20/466,390.80 = 248,719.20/x
  3. Step 3: Cross multiply
    310,927.20x = 466,390.80 × 248,719.20
  4. Step 4: Simplify right side
    310,927.20x = 116,000,346,663.36
  5. Step 5: Solve for x
    x = 116,000,346,663.36/310,927.20
  6. Step 6: Final answer
    x = 373,078.80

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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.