Home / 287,862.20-431,210.10-163,057.40

Finding the Fourth Proportional to 287,862.20, 431,210.10 and 163,057.40

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Solution

The fourth proportional to 287,862.20, 431,210.10 and 163,057.40 is: 244,255.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,862.20 : 431,210.10 = 163,057.40 : x
  2. Step 2: Convert to fraction form
    287,862.20/431,210.10 = 163,057.40/x
  3. Step 3: Cross multiply
    287,862.20x = 431,210.10 × 163,057.40
  4. Step 4: Simplify right side
    287,862.20x = 70,311,997,759.74
  5. Step 5: Solve for x
    x = 70,311,997,759.74/287,862.20
  6. Step 6: Final answer
    x = 244,255.75

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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.