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Finding the Fourth Proportional to 340,543.40, 510,815.10 and 303,801.80

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Solution

The fourth proportional to 340,543.40, 510,815.10 and 303,801.80 is: 455,702.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,543.40 : 510,815.10 = 303,801.80 : x
  2. Step 2: Convert to fraction form
    340,543.40/510,815.10 = 303,801.80/x
  3. Step 3: Cross multiply
    340,543.40x = 510,815.10 × 303,801.80
  4. Step 4: Simplify right side
    340,543.40x = 155,186,546,847.18
  5. Step 5: Solve for x
    x = 155,186,546,847.18/340,543.40
  6. Step 6: Final answer
    x = 455,702.70

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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.