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Finding the Fourth Proportional to 286,883.70, 430,325.55 and 172,722.30

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Solution

The fourth proportional to 286,883.70, 430,325.55 and 172,722.30 is: 259,083.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,883.70 : 430,325.55 = 172,722.30 : x
  2. Step 2: Convert to fraction form
    286,883.70/430,325.55 = 172,722.30/x
  3. Step 3: Cross multiply
    286,883.70x = 430,325.55 × 172,722.30
  4. Step 4: Simplify right side
    286,883.70x = 74,326,818,744.77
  5. Step 5: Solve for x
    x = 74,326,818,744.77/286,883.70
  6. Step 6: Final answer
    x = 259,083.45

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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.