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Finding the Fourth Proportional to 291,699.64, 402,543.12 and 162,636.58

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Solution

The fourth proportional to 291,699.64, 402,543.12 and 162,636.58 is: 224,437.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,699.64 : 402,543.12 = 162,636.58 : x
  2. Step 2: Convert to fraction form
    291,699.64/402,543.12 = 162,636.58/x
  3. Step 3: Cross multiply
    291,699.64x = 402,543.12 × 162,636.58
  4. Step 4: Simplify right side
    291,699.64x = 65,468,236,339.33
  5. Step 5: Solve for x
    x = 65,468,236,339.33/291,699.64
  6. Step 6: Final answer
    x = 224,437.15

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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.