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Finding the Fourth Proportional to 172,871.40, 259,307.10 and 152,135.40

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Solution

The fourth proportional to 172,871.40, 259,307.10 and 152,135.40 is: 228,203.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,871.40 : 259,307.10 = 152,135.40 : x
  2. Step 2: Convert to fraction form
    172,871.40/259,307.10 = 152,135.40/x
  3. Step 3: Cross multiply
    172,871.40x = 259,307.10 × 152,135.40
  4. Step 4: Simplify right side
    172,871.40x = 39,449,789,381.34
  5. Step 5: Solve for x
    x = 39,449,789,381.34/172,871.40
  6. Step 6: Final answer
    x = 228,203.10

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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.