Home / 211,403.85-317,072-61,609.10

Finding the Fourth Proportional to 211,403.85, 317,072 and 61,609.10

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Solution

The fourth proportional to 211,403.85, 317,072 and 61,609.10 is: 92,403.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,403.85 : 317,072 = 61,609.10 : x
  2. Step 2: Convert to fraction form
    211,403.85/317,072 = 61,609.10/x
  3. Step 3: Cross multiply
    211,403.85x = 317,072 × 61,609.10
  4. Step 4: Simplify right side
    211,403.85x = 19,534,518,969.84
  5. Step 5: Solve for x
    x = 19,534,518,969.84/211,403.85
  6. Step 6: Final answer
    x = 92,403.80

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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.