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Finding the Fourth Proportional to 275,507.60, 380,206.11 and 154,657.64

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Solution

The fourth proportional to 275,507.60, 380,206.11 and 154,657.64 is: 213,430.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,507.60 : 380,206.11 = 154,657.64 : x
  2. Step 2: Convert to fraction form
    275,507.60/380,206.11 = 154,657.64/x
  3. Step 3: Cross multiply
    275,507.60x = 380,206.11 × 154,657.64
  4. Step 4: Simplify right side
    275,507.60x = 58,801,779,686.18
  5. Step 5: Solve for x
    x = 58,801,779,686.18/275,507.60
  6. Step 6: Final answer
    x = 213,430.70

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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.