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Finding the Fourth Proportional to 245,307.52, 338,552.42 and 136,422.70

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Solution

The fourth proportional to 245,307.52, 338,552.42 and 136,422.70 is: 188,278.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,307.52 : 338,552.42 = 136,422.70 : x
  2. Step 2: Convert to fraction form
    245,307.52/338,552.42 = 136,422.70/x
  3. Step 3: Cross multiply
    245,307.52x = 338,552.42 × 136,422.70
  4. Step 4: Simplify right side
    245,307.52x = 46,186,232,853.06
  5. Step 5: Solve for x
    x = 46,186,232,853.06/245,307.52
  6. Step 6: Final answer
    x = 188,278.92

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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.