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Finding the Fourth Proportional to 272,417.44, 409,008.56 and 139,393.12

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Solution

The fourth proportional to 272,417.44, 409,008.56 and 139,393.12 is: 209,285.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,417.44 : 409,008.56 = 139,393.12 : x
  2. Step 2: Convert to fraction form
    272,417.44/409,008.56 = 139,393.12/x
  3. Step 3: Cross multiply
    272,417.44x = 409,008.56 × 139,393.12
  4. Step 4: Simplify right side
    272,417.44x = 57,012,979,285.11
  5. Step 5: Solve for x
    x = 57,012,979,285.11/272,417.44
  6. Step 6: Final answer
    x = 209,285.35

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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.