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Finding the Fourth Proportional to 658,145.63, 987,218.45 and 159,509.63

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Solution

The fourth proportional to 658,145.63, 987,218.45 and 159,509.63 is: 239,264.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,145.63 : 987,218.45 = 159,509.63 : x
  2. Step 2: Convert to fraction form
    658,145.63/987,218.45 = 159,509.63/x
  3. Step 3: Cross multiply
    658,145.63x = 987,218.45 × 159,509.63
  4. Step 4: Simplify right side
    658,145.63x = 157,470,843,955.03
  5. Step 5: Solve for x
    x = 157,470,843,955.03/658,145.63
  6. Step 6: Final answer
    x = 239,264.44

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Double scale
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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.