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Finding the Fourth Proportional to 585,137.72, 807,485.38 and 316,865.72

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Solution

The fourth proportional to 585,137.72, 807,485.38 and 316,865.72 is: 437,272.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,137.72 : 807,485.38 = 316,865.72 : x
  2. Step 2: Convert to fraction form
    585,137.72/807,485.38 = 316,865.72/x
  3. Step 3: Cross multiply
    585,137.72x = 807,485.38 × 316,865.72
  4. Step 4: Simplify right side
    585,137.72x = 255,864,436,323.17
  5. Step 5: Solve for x
    x = 255,864,436,323.17/585,137.72
  6. Step 6: Final answer
    x = 437,272.16

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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.