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Finding the Fourth Proportional to 310,861.72, 429,004.92 and 183,534.58

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Solution

The fourth proportional to 310,861.72, 429,004.92 and 183,534.58 is: 253,287.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,861.72 : 429,004.92 = 183,534.58 : x
  2. Step 2: Convert to fraction form
    310,861.72/429,004.92 = 183,534.58/x
  3. Step 3: Cross multiply
    310,861.72x = 429,004.92 × 183,534.58
  4. Step 4: Simplify right side
    310,861.72x = 78,737,237,810.13
  5. Step 5: Solve for x
    x = 78,737,237,810.13/310,861.72
  6. Step 6: Final answer
    x = 253,287.02

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1.5x scale

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.