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Finding the Fourth Proportional to 287,777.80, 431,790.90 and 154,502.29

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Solution

The fourth proportional to 287,777.80, 431,790.90 and 154,502.29 is: 231,820.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,777.80 : 431,790.90 = 154,502.29 : x
  2. Step 2: Convert to fraction form
    287,777.80/431,790.90 = 154,502.29/x
  3. Step 3: Cross multiply
    287,777.80x = 431,790.90 × 154,502.29
  4. Step 4: Simplify right side
    287,777.80x = 66,712,682,851.16
  5. Step 5: Solve for x
    x = 66,712,682,851.16/287,777.80
  6. Step 6: Final answer
    x = 231,820.12

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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.