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Finding the Fourth Proportional to 153,998.70, 230,998.05 and 145,445.10

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Solution

The fourth proportional to 153,998.70, 230,998.05 and 145,445.10 is: 218,167.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,998.70 : 230,998.05 = 145,445.10 : x
  2. Step 2: Convert to fraction form
    153,998.70/230,998.05 = 145,445.10/x
  3. Step 3: Cross multiply
    153,998.70x = 230,998.05 × 145,445.10
  4. Step 4: Simplify right side
    153,998.70x = 33,597,534,482.06
  5. Step 5: Solve for x
    x = 33,597,534,482.06/153,998.70
  6. Step 6: Final answer
    x = 218,167.65

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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.