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Finding the Fourth Proportional to 518,882.01, 778,258.62 and 139,832.39

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Solution

The fourth proportional to 518,882.01, 778,258.62 and 139,832.39 is: 209,731.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,882.01 : 778,258.62 = 139,832.39 : x
  2. Step 2: Convert to fraction form
    518,882.01/778,258.62 = 139,832.39/x
  3. Step 3: Cross multiply
    518,882.01x = 778,258.62 × 139,832.39
  4. Step 4: Simplify right side
    518,882.01x = 108,825,758,981.41
  5. Step 5: Solve for x
    x = 108,825,758,981.41/518,882.01
  6. Step 6: Final answer
    x = 209,731.22

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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.