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Finding the Fourth Proportional to 310,818.96, 428,931.80 and 183,557.28

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Solution

The fourth proportional to 310,818.96, 428,931.80 and 183,557.28 is: 253,310.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,818.96 : 428,931.80 = 183,557.28 : x
  2. Step 2: Convert to fraction form
    310,818.96/428,931.80 = 183,557.28/x
  3. Step 3: Cross multiply
    310,818.96x = 428,931.80 × 183,557.28
  4. Step 4: Simplify right side
    310,818.96x = 78,733,554,513.50
  5. Step 5: Solve for x
    x = 78,733,554,513.50/310,818.96
  6. Step 6: Final answer
    x = 253,310.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.