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Finding the Fourth Proportional to 476,610.10, 715,013.58 and 139,661.74

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Solution

The fourth proportional to 476,610.10, 715,013.58 and 139,661.74 is: 209,521.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,610.10 : 715,013.58 = 139,661.74 : x
  2. Step 2: Convert to fraction form
    476,610.10/715,013.58 = 139,661.74/x
  3. Step 3: Cross multiply
    476,610.10x = 715,013.58 × 139,661.74
  4. Step 4: Simplify right side
    476,610.10x = 99,860,040,706.43
  5. Step 5: Solve for x
    x = 99,860,040,706.43/476,610.10
  6. Step 6: Final answer
    x = 209,521.45

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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.