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Finding the Fourth Proportional to 275,486.42, 380,150.62 and 152,985.71

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Solution

The fourth proportional to 275,486.42, 380,150.62 and 152,985.71 is: 211,108.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,486.42 : 380,150.62 = 152,985.71 : x
  2. Step 2: Convert to fraction form
    275,486.42/380,150.62 = 152,985.71/x
  3. Step 3: Cross multiply
    275,486.42x = 380,150.62 × 152,985.71
  4. Step 4: Simplify right side
    275,486.42x = 58,157,613,075.55
  5. Step 5: Solve for x
    x = 58,157,613,075.55/275,486.42
  6. Step 6: Final answer
    x = 211,108.82

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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.