Home / 287,669.12-431,204.24-161,123.84

Finding the Fourth Proportional to 287,669.12, 431,204.24 and 161,123.84

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Solution

The fourth proportional to 287,669.12, 431,204.24 and 161,123.84 is: 241,518.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,669.12 : 431,204.24 = 161,123.84 : x
  2. Step 2: Convert to fraction form
    287,669.12/431,204.24 = 161,123.84/x
  3. Step 3: Cross multiply
    287,669.12x = 431,204.24 × 161,123.84
  4. Step 4: Simplify right side
    287,669.12x = 69,477,282,973.08
  5. Step 5: Solve for x
    x = 69,477,282,973.08/287,669.12
  6. Step 6: Final answer
    x = 241,518.04

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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.