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Finding the Fourth Proportional to 245,592.56, 338,937.36 and 138,156.20

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Solution

The fourth proportional to 245,592.56, 338,937.36 and 138,156.20 is: 190,666.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,592.56 : 338,937.36 = 138,156.20 : x
  2. Step 2: Convert to fraction form
    245,592.56/338,937.36 = 138,156.20/x
  3. Step 3: Cross multiply
    245,592.56x = 338,937.36 × 138,156.20
  4. Step 4: Simplify right side
    245,592.56x = 46,826,297,695.63
  5. Step 5: Solve for x
    x = 46,826,297,695.63/245,592.56
  6. Step 6: Final answer
    x = 190,666.60

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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.