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Finding the Fourth Proportional to 173,218.73, 239,271.35 and 139,354.76

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Solution

The fourth proportional to 173,218.73, 239,271.35 and 139,354.76 is: 192,494.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,218.73 : 239,271.35 = 139,354.76 : x
  2. Step 2: Convert to fraction form
    173,218.73/239,271.35 = 139,354.76/x
  3. Step 3: Cross multiply
    173,218.73x = 239,271.35 × 139,354.76
  4. Step 4: Simplify right side
    173,218.73x = 33,343,601,455.53
  5. Step 5: Solve for x
    x = 33,343,601,455.53/173,218.73
  6. Step 6: Final answer
    x = 192,494.21

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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.