Home / 287,575.40-431,363.10-161,604.20

Finding the Fourth Proportional to 287,575.40, 431,363.10 and 161,604.20

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Solution

The fourth proportional to 287,575.40, 431,363.10 and 161,604.20 is: 242,406.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,575.40 : 431,363.10 = 161,604.20 : x
  2. Step 2: Convert to fraction form
    287,575.40/431,363.10 = 161,604.20/x
  3. Step 3: Cross multiply
    287,575.40x = 431,363.10 × 161,604.20
  4. Step 4: Simplify right side
    287,575.40x = 69,710,088,685.02
  5. Step 5: Solve for x
    x = 69,710,088,685.02/287,575.40
  6. Step 6: Final answer
    x = 242,406.30

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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.