Home / 287,837.20-431,172.60-163,032.40

Finding the Fourth Proportional to 287,837.20, 431,172.60 and 163,032.40

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Solution

The fourth proportional to 287,837.20, 431,172.60 and 163,032.40 is: 244,218.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,837.20 : 431,172.60 = 163,032.40 : x
  2. Step 2: Convert to fraction form
    287,837.20/431,172.60 = 163,032.40/x
  3. Step 3: Cross multiply
    287,837.20x = 431,172.60 × 163,032.40
  4. Step 4: Simplify right side
    287,837.20x = 70,295,103,792.24
  5. Step 5: Solve for x
    x = 70,295,103,792.24/287,837.20
  6. Step 6: Final answer
    x = 244,218.27

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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.