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Finding the Fourth Proportional to 310,060.60, 465,090.90 and 305,913.40

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Solution

The fourth proportional to 310,060.60, 465,090.90 and 305,913.40 is: 458,870.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,060.60 : 465,090.90 = 305,913.40 : x
  2. Step 2: Convert to fraction form
    310,060.60/465,090.90 = 305,913.40/x
  3. Step 3: Cross multiply
    310,060.60x = 465,090.90 × 305,913.40
  4. Step 4: Simplify right side
    310,060.60x = 142,277,538,528.06
  5. Step 5: Solve for x
    x = 142,277,538,528.06/310,060.60
  6. Step 6: Final answer
    x = 458,870.10

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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.