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Finding the Fourth Proportional to 346,458.55, 519,921.57 and 121,820.24

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Solution

The fourth proportional to 346,458.55, 519,921.57 and 121,820.24 is: 182,812.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,458.55 : 519,921.57 = 121,820.24 : x
  2. Step 2: Convert to fraction form
    346,458.55/519,921.57 = 121,820.24/x
  3. Step 3: Cross multiply
    346,458.55x = 519,921.57 × 121,820.24
  4. Step 4: Simplify right side
    346,458.55x = 63,336,970,438.58
  5. Step 5: Solve for x
    x = 63,336,970,438.58/346,458.55
  6. Step 6: Final answer
    x = 182,812.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.