Home / 287,957.20-431,352.60-163,152.40

Finding the Fourth Proportional to 287,957.20, 431,352.60 and 163,152.40

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Solution

The fourth proportional to 287,957.20, 431,352.60 and 163,152.40 is: 244,398.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,957.20 : 431,352.60 = 163,152.40 : x
  2. Step 2: Convert to fraction form
    287,957.20/431,352.60 = 163,152.40/x
  3. Step 3: Cross multiply
    287,957.20x = 431,352.60 × 163,152.40
  4. Step 4: Simplify right side
    287,957.20x = 70,376,211,936.24
  5. Step 5: Solve for x
    x = 70,376,211,936.24/287,957.20
  6. Step 6: Final answer
    x = 244,398.17

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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.