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Finding the Fourth Proportional to 144,689.67, 217,034.64 and 39,509.55

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Solution

The fourth proportional to 144,689.67, 217,034.64 and 39,509.55 is: 59,264.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,689.67 : 217,034.64 = 39,509.55 : x
  2. Step 2: Convert to fraction form
    144,689.67/217,034.64 = 39,509.55/x
  3. Step 3: Cross multiply
    144,689.67x = 217,034.64 × 39,509.55
  4. Step 4: Simplify right side
    144,689.67x = 8,574,940,960.81
  5. Step 5: Solve for x
    x = 8,574,940,960.81/144,689.67
  6. Step 6: Final answer
    x = 59,264.36

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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.