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Finding the Fourth Proportional to 291,699.77, 402,543.29 and 162,636.71

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Solution

The fourth proportional to 291,699.77, 402,543.29 and 162,636.71 is: 224,437.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,699.77 : 402,543.29 = 162,636.71 : x
  2. Step 2: Convert to fraction form
    291,699.77/402,543.29 = 162,636.71/x
  3. Step 3: Cross multiply
    291,699.77x = 402,543.29 × 162,636.71
  4. Step 4: Simplify right side
    291,699.77x = 65,468,314,712.05
  5. Step 5: Solve for x
    x = 65,468,314,712.05/291,699.77
  6. Step 6: Final answer
    x = 224,437.32

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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.