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Finding the Fourth Proportional to 211,312.61, 317,020.79 and 61,554.30

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Solution

The fourth proportional to 211,312.61, 317,020.79 and 61,554.30 is: 92,346.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,312.61 : 317,020.79 = 61,554.30 : x
  2. Step 2: Convert to fraction form
    211,312.61/317,020.79 = 61,554.30/x
  3. Step 3: Cross multiply
    211,312.61x = 317,020.79 × 61,554.30
  4. Step 4: Simplify right side
    211,312.61x = 19,513,992,506.13
  5. Step 5: Solve for x
    x = 19,513,992,506.13/211,312.61
  6. Step 6: Final answer
    x = 92,346.56

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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.