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Finding the Fourth Proportional to 310,001.20, 465,001.80 and 99,660.40

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Solution

The fourth proportional to 310,001.20, 465,001.80 and 99,660.40 is: 149,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,001.20 : 465,001.80 = 99,660.40 : x
  2. Step 2: Convert to fraction form
    310,001.20/465,001.80 = 99,660.40/x
  3. Step 3: Cross multiply
    310,001.20x = 465,001.80 × 99,660.40
  4. Step 4: Simplify right side
    310,001.20x = 46,342,265,388.72
  5. Step 5: Solve for x
    x = 46,342,265,388.72/310,001.20
  6. Step 6: Final answer
    x = 149,490.60

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1.5x scale

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.