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Finding the Fourth Proportional to 152,407.40, 228,611.10 and 131,412.20

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Solution

The fourth proportional to 152,407.40, 228,611.10 and 131,412.20 is: 197,118.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,407.40 : 228,611.10 = 131,412.20 : x
  2. Step 2: Convert to fraction form
    152,407.40/228,611.10 = 131,412.20/x
  3. Step 3: Cross multiply
    152,407.40x = 228,611.10 × 131,412.20
  4. Step 4: Simplify right side
    152,407.40x = 30,042,287,595.42
  5. Step 5: Solve for x
    x = 30,042,287,595.42/152,407.40
  6. Step 6: Final answer
    x = 197,118.30

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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.