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Finding the Fourth Proportional to 259,261.60, 388,114.80 and 154,026.40

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Solution

The fourth proportional to 259,261.60, 388,114.80 and 154,026.40 is: 230,577.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,261.60 : 388,114.80 = 154,026.40 : x
  2. Step 2: Convert to fraction form
    259,261.60/388,114.80 = 154,026.40/x
  3. Step 3: Cross multiply
    259,261.60x = 388,114.80 × 154,026.40
  4. Step 4: Simplify right side
    259,261.60x = 59,779,925,430.72
  5. Step 5: Solve for x
    x = 59,779,925,430.72/259,261.60
  6. Step 6: Final answer
    x = 230,577.63

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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.