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Finding the Fourth Proportional to 660,254.18, 990,446.88 and 239,562.86

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Solution

The fourth proportional to 660,254.18, 990,446.88 and 239,562.86 is: 359,368.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,254.18 : 990,446.88 = 239,562.86 : x
  2. Step 2: Convert to fraction form
    660,254.18/990,446.88 = 239,562.86/x
  3. Step 3: Cross multiply
    660,254.18x = 990,446.88 × 239,562.86
  4. Step 4: Simplify right side
    660,254.18x = 237,274,287,250.88
  5. Step 5: Solve for x
    x = 237,274,287,250.88/660,254.18
  6. Step 6: Final answer
    x = 359,368.10

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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.