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Finding the Fourth Proportional to 316,541.40, 437,485.50 and 253,555.80

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Solution

The fourth proportional to 316,541.40, 437,485.50 and 253,555.80 is: 350,434.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,541.40 : 437,485.50 = 253,555.80 : x
  2. Step 2: Convert to fraction form
    316,541.40/437,485.50 = 253,555.80/x
  3. Step 3: Cross multiply
    316,541.40x = 437,485.50 × 253,555.80
  4. Step 4: Simplify right side
    316,541.40x = 110,926,985,940.90
  5. Step 5: Solve for x
    x = 110,926,985,940.90/316,541.40
  6. Step 6: Final answer
    x = 350,434.37

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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.