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Finding the Fourth Proportional to 253,706.65, 380,595.51 and 103,968.23

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Solution

The fourth proportional to 253,706.65, 380,595.51 and 103,968.23 is: 155,966.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,706.65 : 380,595.51 = 103,968.23 : x
  2. Step 2: Convert to fraction form
    253,706.65/380,595.51 = 103,968.23/x
  3. Step 3: Cross multiply
    253,706.65x = 380,595.51 × 103,968.23
  4. Step 4: Simplify right side
    253,706.65x = 39,569,839,617.67
  5. Step 5: Solve for x
    x = 39,569,839,617.67/253,706.65
  6. Step 6: Final answer
    x = 155,966.90

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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.