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Finding the Fourth Proportional to 559,056.25, 771,510.29 and 317,316.21

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Solution

The fourth proportional to 559,056.25, 771,510.29 and 317,316.21 is: 437,903.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,056.25 : 771,510.29 = 317,316.21 : x
  2. Step 2: Convert to fraction form
    559,056.25/771,510.29 = 317,316.21/x
  3. Step 3: Cross multiply
    559,056.25x = 771,510.29 × 317,316.21
  4. Step 4: Simplify right side
    559,056.25x = 244,812,721,198.80
  5. Step 5: Solve for x
    x = 244,812,721,198.80/559,056.25
  6. Step 6: Final answer
    x = 437,903.56

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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.