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Finding the Fourth Proportional to 159,590.21, 239,420.32 and 47,279.20

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Solution

The fourth proportional to 159,590.21, 239,420.32 and 47,279.20 is: 70,929.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,590.21 : 239,420.32 = 47,279.20 : x
  2. Step 2: Convert to fraction form
    159,590.21/239,420.32 = 47,279.20/x
  3. Step 3: Cross multiply
    159,590.21x = 239,420.32 × 47,279.20
  4. Step 4: Simplify right side
    159,590.21x = 11,319,600,925.51
  5. Step 5: Solve for x
    x = 11,319,600,925.51/159,590.21
  6. Step 6: Final answer
    x = 70,929.17

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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.