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Finding the Fourth Proportional to 319,008.60, 478,485.90 and 97,392.60

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Solution

The fourth proportional to 319,008.60, 478,485.90 and 97,392.60 is: 146,080.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,008.60 : 478,485.90 = 97,392.60 : x
  2. Step 2: Convert to fraction form
    319,008.60/478,485.90 = 97,392.60/x
  3. Step 3: Cross multiply
    319,008.60x = 478,485.90 × 97,392.60
  4. Step 4: Simplify right side
    319,008.60x = 46,600,985,864.34
  5. Step 5: Solve for x
    x = 46,600,985,864.34/319,008.60
  6. Step 6: Final answer
    x = 146,080.66

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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.