Home / 287,842.20-431,180.10-163,037.40

Finding the Fourth Proportional to 287,842.20, 431,180.10 and 163,037.40

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Solution

The fourth proportional to 287,842.20, 431,180.10 and 163,037.40 is: 244,225.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,842.20 : 431,180.10 = 163,037.40 : x
  2. Step 2: Convert to fraction form
    287,842.20/431,180.10 = 163,037.40/x
  3. Step 3: Cross multiply
    287,842.20x = 431,180.10 × 163,037.40
  4. Step 4: Simplify right side
    287,842.20x = 70,298,482,435.74
  5. Step 5: Solve for x
    x = 70,298,482,435.74/287,842.20
  6. Step 6: Final answer
    x = 244,225.77

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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.