Home / 211,931.69-317,834.13-69,750.72

Finding the Fourth Proportional to 211,931.69, 317,834.13 and 69,750.72

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Solution

The fourth proportional to 211,931.69, 317,834.13 and 69,750.72 is: 104,605.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,931.69 : 317,834.13 = 69,750.72 : x
  2. Step 2: Convert to fraction form
    211,931.69/317,834.13 = 69,750.72/x
  3. Step 3: Cross multiply
    211,931.69x = 317,834.13 × 69,750.72
  4. Step 4: Simplify right side
    211,931.69x = 22,169,159,277.29
  5. Step 5: Solve for x
    x = 22,169,159,277.29/211,931.69
  6. Step 6: Final answer
    x = 104,605.21

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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.