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Finding the Fourth Proportional to 554,386.40, 831,572.28 and 133,658.90

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Solution

The fourth proportional to 554,386.40, 831,572.28 and 133,658.90 is: 200,486.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,386.40 : 831,572.28 = 133,658.90 : x
  2. Step 2: Convert to fraction form
    554,386.40/831,572.28 = 133,658.90/x
  3. Step 3: Cross multiply
    554,386.40x = 831,572.28 × 133,658.90
  4. Step 4: Simplify right side
    554,386.40x = 111,147,036,215.29
  5. Step 5: Solve for x
    x = 111,147,036,215.29/554,386.40
  6. Step 6: Final answer
    x = 200,486.59

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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.