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Finding the Fourth Proportional to 660,586.78, 990,637.12 and 228,194.24

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Solution

The fourth proportional to 660,586.78, 990,637.12 and 228,194.24 is: 342,207.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,586.78 : 990,637.12 = 228,194.24 : x
  2. Step 2: Convert to fraction form
    660,586.78/990,637.12 = 228,194.24/x
  3. Step 3: Cross multiply
    660,586.78x = 990,637.12 × 228,194.24
  4. Step 4: Simplify right side
    660,586.78x = 226,057,684,714.19
  5. Step 5: Solve for x
    x = 226,057,684,714.19/660,586.78
  6. Step 6: Final answer
    x = 342,207.40

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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.