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Finding the Fourth Proportional to 389,887.11, 584,851.32 and 109,426.23

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Solution

The fourth proportional to 389,887.11, 584,851.32 and 109,426.23 is: 164,145.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,887.11 : 584,851.32 = 109,426.23 : x
  2. Step 2: Convert to fraction form
    389,887.11/584,851.32 = 109,426.23/x
  3. Step 3: Cross multiply
    389,887.11x = 584,851.32 × 109,426.23
  4. Step 4: Simplify right side
    389,887.11x = 63,998,075,058.12
  5. Step 5: Solve for x
    x = 63,998,075,058.12/389,887.11
  6. Step 6: Final answer
    x = 164,145.14

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1.5x scale

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.