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Finding the Fourth Proportional to 499,325, 689,070.93 and 272,970.50

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Solution

The fourth proportional to 499,325, 689,070.93 and 272,970.50 is: 376,700.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,325 : 689,070.93 = 272,970.50 : x
  2. Step 2: Convert to fraction form
    499,325/689,070.93 = 272,970.50/x
  3. Step 3: Cross multiply
    499,325x = 689,070.93 × 272,970.50
  4. Step 4: Simplify right side
    499,325x = 188,096,036,297.57
  5. Step 5: Solve for x
    x = 188,096,036,297.57/499,325
  6. Step 6: Final answer
    x = 376,700.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.