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Finding the Fourth Proportional to 561,328.79, 841,993.79 and 140,604.66

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Solution

The fourth proportional to 561,328.79, 841,993.79 and 140,604.66 is: 210,907.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,328.79 : 841,993.79 = 140,604.66 : x
  2. Step 2: Convert to fraction form
    561,328.79/841,993.79 = 140,604.66/x
  3. Step 3: Cross multiply
    561,328.79x = 841,993.79 × 140,604.66
  4. Step 4: Simplify right side
    561,328.79x = 118,388,249,862.04
  5. Step 5: Solve for x
    x = 118,388,249,862.04/561,328.79
  6. Step 6: Final answer
    x = 210,907.14

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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.