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Finding the Fourth Proportional to 487,679.02, 731,543 and 155,280.94

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Solution

The fourth proportional to 487,679.02, 731,543 and 155,280.94 is: 232,929.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,679.02 : 731,543 = 155,280.94 : x
  2. Step 2: Convert to fraction form
    487,679.02/731,543 = 155,280.94/x
  3. Step 3: Cross multiply
    487,679.02x = 731,543 × 155,280.94
  4. Step 4: Simplify right side
    487,679.02x = 113,594,684,690.42
  5. Step 5: Solve for x
    x = 113,594,684,690.42/487,679.02
  6. Step 6: Final answer
    x = 232,929.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.