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Finding the Fourth Proportional to 476,609.51, 715,012.41 and 139,661.12

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Solution

The fourth proportional to 476,609.51, 715,012.41 and 139,661.12 is: 209,520.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,609.51 : 715,012.41 = 139,661.12 : x
  2. Step 2: Convert to fraction form
    476,609.51/715,012.41 = 139,661.12/x
  3. Step 3: Cross multiply
    476,609.51x = 715,012.41 × 139,661.12
  4. Step 4: Simplify right side
    476,609.51x = 99,859,433,994.50
  5. Step 5: Solve for x
    x = 99,859,433,994.50/476,609.51
  6. Step 6: Final answer
    x = 209,520.44

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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.