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Finding the Fourth Proportional to 478,312.62, 717,510.18 and 123,323.64

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Solution

The fourth proportional to 478,312.62, 717,510.18 and 123,323.64 is: 184,996.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,312.62 : 717,510.18 = 123,323.64 : x
  2. Step 2: Convert to fraction form
    478,312.62/717,510.18 = 123,323.64/x
  3. Step 3: Cross multiply
    478,312.62x = 717,510.18 × 123,323.64
  4. Step 4: Simplify right side
    478,312.62x = 88,485,967,134.66
  5. Step 5: Solve for x
    x = 88,485,967,134.66/478,312.62
  6. Step 6: Final answer
    x = 184,996.10

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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.