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Finding the Fourth Proportional to 491,018.40, 736,484.40 and 136,000.80

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Solution

The fourth proportional to 491,018.40, 736,484.40 and 136,000.80 is: 203,989.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,018.40 : 736,484.40 = 136,000.80 : x
  2. Step 2: Convert to fraction form
    491,018.40/736,484.40 = 136,000.80/x
  3. Step 3: Cross multiply
    491,018.40x = 736,484.40 × 136,000.80
  4. Step 4: Simplify right side
    491,018.40x = 100,162,467,587.52
  5. Step 5: Solve for x
    x = 100,162,467,587.52/491,018.40
  6. Step 6: Final answer
    x = 203,989.23

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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.