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Finding the Fourth Proportional to 531,345.16, 797,190.05 and 318,079.86

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Solution

The fourth proportional to 531,345.16, 797,190.05 and 318,079.86 is: 477,222.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,345.16 : 797,190.05 = 318,079.86 : x
  2. Step 2: Convert to fraction form
    531,345.16/797,190.05 = 318,079.86/x
  3. Step 3: Cross multiply
    531,345.16x = 797,190.05 × 318,079.86
  4. Step 4: Simplify right side
    531,345.16x = 253,570,093,921.04
  5. Step 5: Solve for x
    x = 253,570,093,921.04/531,345.16
  6. Step 6: Final answer
    x = 477,222.93

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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.