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Finding the Fourth Proportional to 289,478.62, 399,502.66 and 182,140.66

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Solution

The fourth proportional to 289,478.62, 399,502.66 and 182,140.66 is: 251,368.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,478.62 : 399,502.66 = 182,140.66 : x
  2. Step 2: Convert to fraction form
    289,478.62/399,502.66 = 182,140.66/x
  3. Step 3: Cross multiply
    289,478.62x = 399,502.66 × 182,140.66
  4. Step 4: Simplify right side
    289,478.62x = 72,765,678,164.16
  5. Step 5: Solve for x
    x = 72,765,678,164.16/289,478.62
  6. Step 6: Final answer
    x = 251,368.06

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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.