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Finding the Fourth Proportional to 159,422.08, 218,409.20 and 153,443.20

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Solution

The fourth proportional to 159,422.08, 218,409.20 and 153,443.20 is: 210,218.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,422.08 : 218,409.20 = 153,443.20 : x
  2. Step 2: Convert to fraction form
    159,422.08/218,409.20 = 153,443.20/x
  3. Step 3: Cross multiply
    159,422.08x = 218,409.20 × 153,443.20
  4. Step 4: Simplify right side
    159,422.08x = 33,513,406,557.44
  5. Step 5: Solve for x
    x = 33,513,406,557.44/159,422.08
  6. Step 6: Final answer
    x = 210,218.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.