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Finding the Fourth Proportional to 478,783.86, 717,954.99 and 141,703.98

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Solution

The fourth proportional to 478,783.86, 717,954.99 and 141,703.98 is: 212,490.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,783.86 : 717,954.99 = 141,703.98 : x
  2. Step 2: Convert to fraction form
    478,783.86/717,954.99 = 141,703.98/x
  3. Step 3: Cross multiply
    478,783.86x = 717,954.99 × 141,703.98
  4. Step 4: Simplify right side
    478,783.86x = 101,737,079,543.86
  5. Step 5: Solve for x
    x = 101,737,079,543.86/478,783.86
  6. Step 6: Final answer
    x = 212,490.62

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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.