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Finding the Fourth Proportional to 230,809.72, 318,570.56 and 135,347.18

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Solution

The fourth proportional to 230,809.72, 318,570.56 and 135,347.18 is: 186,810.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,809.72 : 318,570.56 = 135,347.18 : x
  2. Step 2: Convert to fraction form
    230,809.72/318,570.56 = 135,347.18/x
  3. Step 3: Cross multiply
    230,809.72x = 318,570.56 × 135,347.18
  4. Step 4: Simplify right side
    230,809.72x = 43,117,626,927.02
  5. Step 5: Solve for x
    x = 43,117,626,927.02/230,809.72
  6. Step 6: Final answer
    x = 186,810.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.