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Finding the Fourth Proportional to 310,720.57, 466,141.01 and 121,173.28

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Solution

The fourth proportional to 310,720.57, 466,141.01 and 121,173.28 is: 181,783.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,720.57 : 466,141.01 = 121,173.28 : x
  2. Step 2: Convert to fraction form
    310,720.57/466,141.01 = 121,173.28/x
  3. Step 3: Cross multiply
    310,720.57x = 466,141.01 × 121,173.28
  4. Step 4: Simplify right side
    310,720.57x = 56,483,833,352.99
  5. Step 5: Solve for x
    x = 56,483,833,352.99/310,720.57
  6. Step 6: Final answer
    x = 181,783.37

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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.