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Finding the Fourth Proportional to 385,280.70, 577,921.05 and 338,624.70

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Solution

The fourth proportional to 385,280.70, 577,921.05 and 338,624.70 is: 507,937.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,280.70 : 577,921.05 = 338,624.70 : x
  2. Step 2: Convert to fraction form
    385,280.70/577,921.05 = 338,624.70/x
  3. Step 3: Cross multiply
    385,280.70x = 577,921.05 × 338,624.70
  4. Step 4: Simplify right side
    385,280.70x = 195,698,342,179.94
  5. Step 5: Solve for x
    x = 195,698,342,179.94/385,280.70
  6. Step 6: Final answer
    x = 507,937.05

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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.