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Finding the Fourth Proportional to 245,238.16, 338,434.68 and 137,801.76

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Solution

The fourth proportional to 245,238.16, 338,434.68 and 137,801.76 is: 190,169.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,238.16 : 338,434.68 = 137,801.76 : x
  2. Step 2: Convert to fraction form
    245,238.16/338,434.68 = 137,801.76/x
  3. Step 3: Cross multiply
    245,238.16x = 338,434.68 × 137,801.76
  4. Step 4: Simplify right side
    245,238.16x = 46,636,894,549.04
  5. Step 5: Solve for x
    x = 46,636,894,549.04/245,238.16
  6. Step 6: Final answer
    x = 190,169.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.