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Finding the Fourth Proportional to 658,145.16, 987,217.75 and 159,509.16

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Solution

The fourth proportional to 658,145.16, 987,217.75 and 159,509.16 is: 239,263.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,145.16 : 987,217.75 = 159,509.16 : x
  2. Step 2: Convert to fraction form
    658,145.16/987,217.75 = 159,509.16/x
  3. Step 3: Cross multiply
    658,145.16x = 987,217.75 × 159,509.16
  4. Step 4: Simplify right side
    658,145.16x = 157,470,270,536.91
  5. Step 5: Solve for x
    x = 157,470,270,536.91/658,145.16
  6. Step 6: Final answer
    x = 239,263.74

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Similar ratio
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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.