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Finding the Fourth Proportional to 523,116.34, 721,814.58 and 308,227.19

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Solution

The fourth proportional to 523,116.34, 721,814.58 and 308,227.19 is: 425,302.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,116.34 : 721,814.58 = 308,227.19 : x
  2. Step 2: Convert to fraction form
    523,116.34/721,814.58 = 308,227.19/x
  3. Step 3: Cross multiply
    523,116.34x = 721,814.58 × 308,227.19
  4. Step 4: Simplify right side
    523,116.34x = 222,482,878,617.47
  5. Step 5: Solve for x
    x = 222,482,878,617.47/523,116.34
  6. Step 6: Final answer
    x = 425,302.87

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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.