Home / 287,570.30-431,355.45-181,282.10

Finding the Fourth Proportional to 287,570.30, 431,355.45 and 181,282.10

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Solution

The fourth proportional to 287,570.30, 431,355.45 and 181,282.10 is: 271,923.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,570.30 : 431,355.45 = 181,282.10 : x
  2. Step 2: Convert to fraction form
    287,570.30/431,355.45 = 181,282.10/x
  3. Step 3: Cross multiply
    287,570.30x = 431,355.45 × 181,282.10
  4. Step 4: Simplify right side
    287,570.30x = 78,197,021,822.45
  5. Step 5: Solve for x
    x = 78,197,021,822.45/287,570.30
  6. Step 6: Final answer
    x = 271,923.15

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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.