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Finding the Fourth Proportional to 319,846.60, 478,848.30 and 195,430.60

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Solution

The fourth proportional to 319,846.60, 478,848.30 and 195,430.60 is: 292,582.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,846.60 : 478,848.30 = 195,430.60 : x
  2. Step 2: Convert to fraction form
    319,846.60/478,848.30 = 195,430.60/x
  3. Step 3: Cross multiply
    319,846.60x = 478,848.30 × 195,430.60
  4. Step 4: Simplify right side
    319,846.60x = 93,581,610,577.98
  5. Step 5: Solve for x
    x = 93,581,610,577.98/319,846.60
  6. Step 6: Final answer
    x = 292,582.79

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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.