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Finding the Fourth Proportional to 461,480.40, 692,155.80 and 145,969.20

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Solution

The fourth proportional to 461,480.40, 692,155.80 and 145,969.20 is: 218,933.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,480.40 : 692,155.80 = 145,969.20 : x
  2. Step 2: Convert to fraction form
    461,480.40/692,155.80 = 145,969.20/x
  3. Step 3: Cross multiply
    461,480.40x = 692,155.80 × 145,969.20
  4. Step 4: Simplify right side
    461,480.40x = 101,033,428,401.36
  5. Step 5: Solve for x
    x = 101,033,428,401.36/461,480.40
  6. Step 6: Final answer
    x = 218,933.30

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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.