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Finding the Fourth Proportional to 369,038.80, 553,209.90 and 200,310.40

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Solution

The fourth proportional to 369,038.80, 553,209.90 and 200,310.40 is: 300,276.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,038.80 : 553,209.90 = 200,310.40 : x
  2. Step 2: Convert to fraction form
    369,038.80/553,209.90 = 200,310.40/x
  3. Step 3: Cross multiply
    369,038.80x = 553,209.90 × 200,310.40
  4. Step 4: Simplify right side
    369,038.80x = 110,813,696,352.96
  5. Step 5: Solve for x
    x = 110,813,696,352.96/369,038.80
  6. Step 6: Final answer
    x = 300,276.55

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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.