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Finding the Fourth Proportional to 476,925.96, 715,499.58 and 139,953

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Solution

The fourth proportional to 476,925.96, 715,499.58 and 139,953 is: 209,961.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,925.96 : 715,499.58 = 139,953 : x
  2. Step 2: Convert to fraction form
    476,925.96/715,499.58 = 139,953/x
  3. Step 3: Cross multiply
    476,925.96x = 715,499.58 × 139,953
  4. Step 4: Simplify right side
    476,925.96x = 100,136,312,719.74
  5. Step 5: Solve for x
    x = 100,136,312,719.74/476,925.96
  6. Step 6: Final answer
    x = 209,961.97

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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.