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Finding the Fourth Proportional to 318,871.08, 478,365.48 and 131,897.16

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Solution

The fourth proportional to 318,871.08, 478,365.48 and 131,897.16 is: 197,870.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,871.08 : 478,365.48 = 131,897.16 : x
  2. Step 2: Convert to fraction form
    318,871.08/478,365.48 = 131,897.16/x
  3. Step 3: Cross multiply
    318,871.08x = 478,365.48 × 131,897.16
  4. Step 4: Simplify right side
    318,871.08x = 63,095,048,254.04
  5. Step 5: Solve for x
    x = 63,095,048,254.04/318,871.08
  6. Step 6: Final answer
    x = 197,870.09

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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.