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Finding the Fourth Proportional to 289,612.48, 399,681.60 and 162,329.12

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Solution

The fourth proportional to 289,612.48, 399,681.60 and 162,329.12 is: 224,023.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,612.48 : 399,681.60 = 162,329.12 : x
  2. Step 2: Convert to fraction form
    289,612.48/399,681.60 = 162,329.12/x
  3. Step 3: Cross multiply
    289,612.48x = 399,681.60 × 162,329.12
  4. Step 4: Simplify right side
    289,612.48x = 64,879,962,408.19
  5. Step 5: Solve for x
    x = 64,879,962,408.19/289,612.48
  6. Step 6: Final answer
    x = 224,023.37

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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.