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Finding the Fourth Proportional to 572,368, 858,583.60 and 172,998.72

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Solution

The fourth proportional to 572,368, 858,583.60 and 172,998.72 is: 259,507.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,368 : 858,583.60 = 172,998.72 : x
  2. Step 2: Convert to fraction form
    572,368/858,583.60 = 172,998.72/x
  3. Step 3: Cross multiply
    572,368x = 858,583.60 × 172,998.72
  4. Step 4: Simplify right side
    572,368x = 148,533,863,812.99
  5. Step 5: Solve for x
    x = 148,533,863,812.99/572,368
  6. Step 6: Final answer
    x = 259,507.63

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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.