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Finding the Fourth Proportional to 366,918.80, 550,378.20 and 310,931.60

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Solution

The fourth proportional to 366,918.80, 550,378.20 and 310,931.60 is: 466,397.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,918.80 : 550,378.20 = 310,931.60 : x
  2. Step 2: Convert to fraction form
    366,918.80/550,378.20 = 310,931.60/x
  3. Step 3: Cross multiply
    366,918.80x = 550,378.20 × 310,931.60
  4. Step 4: Simplify right side
    366,918.80x = 171,129,974,331.12
  5. Step 5: Solve for x
    x = 171,129,974,331.12/366,918.80
  6. Step 6: Final answer
    x = 466,397.40

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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.